code:
import { Scalar } from '../nodes/Scalar.js';
import { foldFlowLines, FOLD_QUOTED, FOLD_FLOW, FOLD_BLOCK } from './foldFlowLines.js';

const getFoldOptions = (ctx, isBlock) => ({
    indentAtStart: isBlock ? ctx.indent.length : ctx.indentAtStart,
    lineWidth: ctx.options.lineWidth,
    minContentWidth: ctx.options.minContentWidth
});
// Also checks for lines starting with %, as parsing the output as YAML 1.1 will
// presume that's starting a new document.
const containsDocumentMarker = (str) => /^(%|---|\.\.\.)/m.test(str);
function lineLengthOverLimit(str, lineWidth, indentLength) {
    if (!lineWidth || lineWidth < 0)
        return false;
    const limit = lineWidth - indentLength;
    const strLen = str.length;
    if (strLen <= limit)
        return false;
    for (let i = 0, start = 0; i < strLen; ++i) {
        if (str[i] === '\n') {
            if (i - start > limit)
                return true;
            start = i + 1;
            if (strLen - start <= limit)
                return false;
        }
    }
    return true;
}
function doubleQuotedString(value, ctx) {
    const json = JSON.stringify(value);
    if (ctx.options.doubleQuotedAsJSON)
        return json;
    const { implicitKey } = ctx;
    const minMultiLineLength = ctx.options.doubleQuotedMinMultiLineLength;
    const indent = ctx.indent || (containsDocumentMarker(value) ? '  ' : '');
    let str = '';
    let start = 0;
    for (let i = 0, ch = json[i]; ch; ch = json[++i]) {
        if (ch === ' ' && json[i + 1] === '\\' && json[i + 2] === 'n') {
            // space before newline needs to be escaped to not be folded
            str += json.slice(start, i) + '\\ ';
            i += 1;
            start = i;
            ch = '\\';
        }
        if (ch === '\\')
            switch (json[i + 1]) {
                case 'u':
                    {
                        str += json.slice(start, i);
                        const code = json.substr(i + 2, 4);
                        switch (code) {
                            case '0000':
                                str += '\\0';
                                break;
                            case '0007':
                                str += '\\a';
                                break;
                            case '000b':
                                str += '\\v';
                                break;
                            case '001b':
                                str += '\\e';
                                break;
                            case '0085':
                                str += '\\N';
                                break;
                            case '00a0':
                                str += '\\_';
                                break;
                            case '2028':
                                str += '\\L';
                                break;
                            case '2029':
                                str += '\\P';
                                break;
                            default:
                                if (code.substr(0, 2) === '00')
                                    str += '\\x' + code.substr(2);
                                else
                                    str += json.substr(i, 6);
                        }
                        i += 5;
                        start = i + 1;
                    }
                    break;
                case 'n':
                    if (implicitKey ||
                        json[i + 2] === '"' ||
                        json.length < minMultiLineLength) {
                        i += 1;
                    }
                    else {
                        // folding will eat first newline
                        str += json.slice(start, i) + '\n\n';
                        while (json[i + 2] === '\\' &&
                            json[i + 3] === 'n' &&
                            json[i + 4] !== '"') {
                            str += '\n';
                            i += 2;
                        }
                        str += indent;
                        // space after newline needs to be escaped to not be folded
                        if (json[i + 2] === ' ')
                            str += '\\';
                        i += 1;
                        start = i + 1;
                    }
                    break;
                default:
                    i += 1;
            }
    }
    str = start ? str + json.slice(start) : json;
    return implicitKey
        ? str
        : foldFlowLines(str, indent, FOLD_QUOTED, getFoldOptions(ctx, false));
}
function singleQuotedString(value, ctx) {
    if (ctx.options.singleQuote === false ||
        (ctx.implicitKey && value.includes('\n')) ||
        /[ \t]\n|\n[ \t]/.test(value) // single quoted string can't have leading or trailing whitespace around newline
    )
        return doubleQuotedString(value, ctx);
    const indent = ctx.indent || (containsDocumentMarker(value) ? '  ' : '');
    const res = "'" + value.replace(/'/g, "''").replace(/\n+/g, `$&\n${indent}`) + "'";
    return ctx.implicitKey
        ? res
        : foldFlowLines(res, indent, FOLD_FLOW, getFoldOptions(ctx, false));
}
function quotedString(value, ctx) {
    const { singleQuote } = ctx.options;
    let qs;
    if (singleQuote === false)
        qs = doubleQuotedString;
    else {
        const hasDouble = value.includes('"');
        const hasSingle = value.includes("'");
        if (hasDouble && !hasSingle)
            qs = singleQuotedString;
        else if (hasSingle && !hasDouble)
            qs = doubleQuotedString;
        else
            qs = singleQuote ? singleQuotedString : doubleQuotedString;
    }
    return qs(value, ctx);
}
// The negative lookbehind avoids a polynomial search,
// but isn't supported yet on Safari: https://caniuse.com/js-regexp-lookbehind
let blockEndNewlines;
try {
    blockEndNewlines = new RegExp('(^|(?<!\n))\n+(?!\n|$)', 'g');
}
catch {
    blockEndNewlines = /\n+(?!\n|$)/g;
}
function blockString({ comment, type, value }, ctx, onComment, onChompKeep) {
    const { blockQuote, commentString, lineWidth } = ctx.options;
    // 1. Block can't end in whitespace unless the last line is non-empty.
    // 2. Strings consisting of only whitespace are best rendered explicitly.
    if (!blockQuote || /\n[\t ]+$/.test(value) || /^\s*$/.test(value)) {
        return quotedString(value, ctx);
    }
    const indent = ctx.indent ||
        (ctx.forceBlockIndent || containsDocumentMarker(value) ? '  ' : '');
    const literal = blockQuote === 'literal'
        ? true
        : blockQuote === 'folded' || type === Scalar.BLOCK_FOLDED
            ? false
            : type === Scalar.BLOCK_LITERAL
                ? true
                : !lineLengthOverLimit(value, lineWidth, indent.length);
    if (!value)
        return literal ? '|\n' : '>\n';
    // determine chomping from whitespace at value end
    let chomp;
    let endStart;
    for (endStart = value.length; endStart > 0; --endStart) {
        const ch = value[endStart - 1];
        if (ch !== '\n' && ch !== '\t' && ch !== ' ')
            break;
    }
    let end = value.substring(endStart);
    const endNlPos = end.indexOf('\n');
    if (endNlPos === -1) {
        chomp = '-'; // strip
    }
    else if (value === end || endNlPos !== end.length - 1) {
        chomp = '+'; // keep
        if (onChompKeep)
            onChompKeep();
    }
    else {
        chomp = ''; // clip
    }
    if (end) {
        value = value.slice(0, -end.length);
        if (end[end.length - 1] === '\n')
            end = end.slice(0, -1);
        end = end.replace(blockEndNewlines, `$&${indent}`);
    }
    // determine indent indicator from whitespace at value start
    let startWithSpace = false;
    let startEnd;
    let startNlPos = -1;
    for (startEnd = 0; startEnd < value.length; ++startEnd) {
        const ch = value[startEnd];
        if (ch === ' ')
            startWithSpace = true;
        else if (ch === '\n')
            startNlPos = startEnd;
        else
            break;
    }
    let start = value.substring(0, startNlPos < startEnd ? startNlPos + 1 : startEnd);
    if (start) {
        value = value.substring(start.length);
        start = start.replace(/\n+/g, `$&${indent}`);
    }
    const indentSize = indent ? '2' : '1'; // root is at -1
    let header = (literal ? '|' : '>') + (startWithSpace ? indentSize : '') + chomp;
    if (comment) {
        header += ' ' + commentString(comment.replace(/ ?[\r\n]+/g, ' '));
        if (onComment)
            onComment();
    }
    if (literal) {
        value = value.replace(/\n+/g, `$&${indent}`);
        return `${header}\n${indent}${start}${value}${end}`;
    }
    value = value
        .replace(/\n+/g, '\n$&')
        .replace(/(?:^|\n)([\t ].*)(?:([\n\t ]*)\n(?![\n\t ]))?/g, '$1$2') // more-indented lines aren't folded
        //                ^ more-ind. ^ empty     ^ capture next empty lines only at end of indent
        .replace(/\n+/g, `$&${indent}`);
    const body = foldFlowLines(`${start}${value}${end}`, indent, FOLD_BLOCK, getFoldOptions(ctx, true));
    return `${header}\n${indent}${body}`;
}
function plainString(item, ctx, onComment, onChompKeep) {
    const { type, value } = item;
    const { actualString, implicitKey, indent, indentStep, inFlow } = ctx;
    if ((implicitKey && value.includes('\n')) ||
        (inFlow && /[[\]{},]/.test(value))) {
        return quotedString(value, ctx);
    }
    if (!value ||
        /^[\n\t ,[\]{}#&*!|>'"%@`]|^[?-]$|^[?-][ \t]|[\n:][ \t]|[ \t]\n|[\n\t ]#|[\n\t :]$/.test(value)) {
        // not allowed:
        // - empty string, '-' or '?'
        // - start with an indicator character (except [?:-]) or /[?-] /
        // - '\n ', ': ' or ' \n' anywhere
        // - '#' not preceded by a non-space char
        // - end with ' ' or ':'
        return implicitKey || inFlow || !value.includes('\n')
            ? quotedString(value, ctx)
            : blockString(item, ctx, onComment, onChompKeep);
    }
    if (!implicitKey &&
        !inFlow &&
        type !== Scalar.PLAIN &&
        value.includes('\n')) {
        // Where allowed & type not set explicitly, prefer block style for multiline strings
        return blockString(item, ctx, onComment, onChompKeep);
    }
    if (containsDocumentMarker(value)) {
        if (indent === '') {
            ctx.forceBlockIndent = true;
            return blockString(item, ctx, onComment, onChompKeep);
        }
        else if (implicitKey && indent === indentStep) {
            return quotedString(value, ctx);
        }
    }
    const str = value.replace(/\n+/g, `$&\n${indent}`);
    // Verify that output will be parsed as a string, as e.g. plain numbers and
    // booleans get parsed with those types in v1.2 (e.g. '42', 'true' & '0.9e-3'),
    // and others in v1.1.
    if (actualString) {
        const test = (tag) => tag.default && tag.tag !== 'tag:yaml.org,2002:str' && tag.test?.test(str);
        const { compat, tags } = ctx.doc.schema;
        if (tags.some(test) || compat?.some(test))
            return quotedString(value, ctx);
    }
    return implicitKey
        ? str
        : foldFlowLines(str, indent, FOLD_FLOW, getFoldOptions(ctx, false));
}
function stringifyString(item, ctx, onComment, onChompKeep) {
    const { implicitKey, inFlow } = ctx;
    const ss = typeof item.value === 'string'
        ? item
        : Object.assign({}, item, { value: String(item.value) });
    let { type } = item;
    if (type !== Scalar.QUOTE_DOUBLE) {
        // force double quotes on control characters & unpaired surrogates
        if (/[\x00-\x08\x0b-\x1f\x7f-\x9f\u{D800}-\u{DFFF}]/u.test(ss.value))
            type = Scalar.QUOTE_DOUBLE;
    }
    const _stringify = (_type) => {
        switch (_type) {
            case Scalar.BLOCK_FOLDED:
            case Scalar.BLOCK_LITERAL:
                return implicitKey || inFlow
                    ? quotedString(ss.value, ctx) // blocks are not valid inside flow containers
                    : blockString(ss, ctx, onComment, onChompKeep);
            case Scalar.QUOTE_DOUBLE:
                return doubleQuotedString(ss.value, ctx);
            case Scalar.QUOTE_SINGLE:
                return singleQuotedString(ss.value, ctx);
            case Scalar.PLAIN:
                return plainString(ss, ctx, onComment, onChompKeep);
            default:
                return null;
        }
    };
    let res = _stringify(type);
    if (res === null) {
        const { defaultKeyType, defaultStringType } = ctx.options;
        const t = (implicitKey && defaultKeyType) || defaultStringType;
        res = _stringify(t);
        if (res === null)
            throw new Error(`Unsupported default string type ${t}`);
    }
    return res;
}

export { stringifyString };


code:
export { createNode } from './doc/createNode.js';
export { debug, warn } from './log.js';
export { createPair } from './nodes/Pair.js';
export { findPair } from './nodes/YAMLMap.js';
export { toJS } from './nodes/toJS.js';
export { map as mapTag } from './schema/common/map.js';
export { seq as seqTag } from './schema/common/seq.js';
export { string as stringTag } from './schema/common/string.js';
export { foldFlowLines } from './stringify/foldFlowLines.js';
export { stringifyNumber } from './stringify/stringifyNumber.js';
export { stringifyString } from './stringify/stringifyString.js';

license: mit


code:
import { isDocument, isNode, isPair, isCollection, isMap, isSeq, isScalar, isAlias } from './nodes/identity.js';

const BREAK = Symbol('break visit');
const SKIP = Symbol('skip children');
const REMOVE = Symbol('remove node');
/**
 * Apply a visitor to an AST node or document.
 *
 * Walks through the tree (depth-first) starting from `node`, calling a
 * `visitor` function with three arguments:
 *   - `key`: For sequence values and map `Pair`, the node's index in the
 *     collection. Within a `Pair`, `'key'` or `'value'`, correspondingly.
 *     `null` for the root node.
 *   - `node`: The current node.
 *   - `path`: The ancestry of the current node.
 *
 * The return value of the visitor may be used to control the traversal:
 *   - `undefined` (default): Do nothing and continue
 *   - `visit.SKIP`: Do not visit the children of this node, continue with next
 *     sibling
 *   - `visit.BREAK`: Terminate traversal completely
 *   - `visit.REMOVE`: Remove the current node, then continue with the next one
 *   - `Node`: Replace the current node, then continue by visiting it
 *   - `number`: While iterating the items of a sequence or map, set the index
 *     of the next step. This is useful especially if the index of the current
 *     node has changed.
 *
 * If `visitor` is a single function, it will be called with all values
 * encountered in the tree, including e.g. `null` values. Alternatively,
 * separate visitor functions may be defined for each `Map`, `Pair`, `Seq`,
 * `Alias` and `Scalar` node. To define the same visitor function for more than
 * one node type, use the `Collection` (map and seq), `Value` (map, seq & scalar)
 * and `Node` (alias, map, seq & scalar) targets. Of all these, only the most
 * specific defined one will be used for each node.
 */
function visit(node, visitor) {
    const visitor_ = initVisitor(visitor);
    if (isDocument(node)) {
        const cd = visit_(null, node.contents, visitor_, Object.freeze([node]));
        if (cd === REMOVE)
            node.contents = null;
    }
    else
        visit_(null, node, visitor_, Object.freeze([]));
}
// Without the `as symbol` casts, TS declares these in the `visit`
// namespace using `var`, but then complains about that because
// `unique symbol` must be `const`.
/** Terminate visit traversal completely */
visit.BREAK = BREAK;
/** Do not visit the children of the current node */
visit.SKIP = SKIP;
/** Remove the current node */
visit.REMOVE = REMOVE;
function visit_(key, node, visitor, path) {
    const ctrl = callVisitor(key, node, visitor, path);
    if (isNode(ctrl) || isPair(ctrl)) {
        replaceNode(key, path, ctrl);
        return visit_(key, ctrl, visitor, path);
    }
    if (typeof ctrl !== 'symbol') {
        if (isCollection(node)) {
            path = Object.freeze(path.concat(node));
            for (let i = 0; i < node.items.length; ++i) {
                const ci = visit_(i, node.items[i], visitor, path);
                if (typeof ci === 'number')
                    i = ci - 1;
                else if (ci === BREAK)
                    return BREAK;
                else if (ci === REMOVE) {
                    node.items.splice(i, 1);
                    i -= 1;
                }
            }
        }
        else if (isPair(node)) {
            path = Object.freeze(path.concat(node));
            const ck = visit_('key', node.key, visitor, path);
            if (ck === BREAK)
                return BREAK;
            else if (ck === REMOVE)
                node.key = null;
            const cv = visit_('value', node.value, visitor, path);
            if (cv === BREAK)
                return BREAK;
            else if (cv === REMOVE)
                node.value = null;
        }
    }
    return ctrl;
}
/**
 * Apply an async visitor to an AST node or document.
 *
 * Walks through the tree (depth-first) starting from `node`, calling a
 * `visitor` function with three arguments:
 *   - `key`: For sequence values and map `Pair`, the node's index in the
 *     collection. Within a `Pair`, `'key'` or `'value'`, correspondingly.
 *     `null` for the root node.
 *   - `node`: The current node.
 *   - `path`: The ancestry of the current node.
 *
 * The return value of the visitor may be used to control the traversal:
 *   - `Promise`: Must resolve to one of the following values
 *   - `undefined` (default): Do nothing and continue
 *   - `visit.SKIP`: Do not visit the children of this node, continue with next
 *     sibling
 *   - `visit.BREAK`: Terminate traversal completely
 *   - `visit.REMOVE`: Remove the current node, then continue with the next one
 *   - `Node`: Replace the current node, then continue by visiting it
 *   - `number`: While iterating the items of a sequence or map, set the index
 *     of the next step. This is useful especially if the index of the current
 *     node has changed.
 *
 * If `visitor` is a single function, it will be called with all values
 * encountered in the tree, including e.g. `null` values. Alternatively,
 * separate visitor functions may be defined for each `Map`, `Pair`, `Seq`,
 * `Alias` and `Scalar` node. To define the same visitor function for more than
 * one node type, use the `Collection` (map and seq), `Value` (map, seq & scalar)
 * and `Node` (alias, map, seq & scalar) targets. Of all these, only the most
 * specific defined one will be used for each node.
 */
async function visitAsync(node, visitor) {
    const visitor_ = initVisitor(visitor);
    if (isDocument(node)) {
        const cd = await visitAsync_(null, node.contents, visitor_, Object.freeze([node]));
        if (cd === REMOVE)
            node.contents = null;
    }
    else
        await visitAsync_(null, node, visitor_, Object.freeze([]));
}
// Without the `as symbol` casts, TS declares these in the `visit`
// namespace using `var`, but then complains about that because
// `unique symbol` must be `const`.
/** Terminate visit traversal completely */
visitAsync.BREAK = BREAK;
/** Do not visit the children of the current node */
visitAsync.SKIP = SKIP;
/** Remove the current node */
visitAsync.REMOVE = REMOVE;
async function visitAsync_(key, node, visitor, path) {
    const ctrl = await callVisitor(key, node, visitor, path);
    if (isNode(ctrl) || isPair(ctrl)) {
        replaceNode(key, path, ctrl);
        return visitAsync_(key, ctrl, visitor, path);
    }
    if (typeof ctrl !== 'symbol') {
        if (isCollection(node)) {
            path = Object.freeze(path.concat(node));
            for (let i = 0; i < node.items.length; ++i) {
                const ci = await visitAsync_(i, node.items[i], visitor, path);
                if (typeof ci === 'number')
                    i = ci - 1;
                else if (ci === BREAK)
                    return BREAK;
                else if (ci === REMOVE) {
                    node.items.splice(i, 1);
                    i -= 1;
                }
            }
        }
        else if (isPair(node)) {
            path = Object.freeze(path.concat(node));
            const ck = await visitAsync_('key', node.key, visitor, path);
            if (ck === BREAK)
                return BREAK;
            else if (ck === REMOVE)
                node.key = null;
            const cv = await visitAsync_('value', node.value, visitor, path);
            if (cv === BREAK)
                return BREAK;
            else if (cv === REMOVE)
                node.value = null;
        }
    }
    return ctrl;
}
function initVisitor(visitor) {
    if (typeof visitor === 'object' &&
        (visitor.Collection || visitor.Node || visitor.Value)) {
        return Object.assign({
            Alias: visitor.Node,
            Map: visitor.Node,
            Scalar: visitor.Node,
            Seq: visitor.Node
        }, visitor.Value && {
            Map: visitor.Value,
            Scalar: visitor.Value,
            Seq: visitor.Value
        }, visitor.Collection && {
            Map: visitor.Collection,
            Seq: visitor.Collection
        }, visitor);
    }
    return visitor;
}
function callVisitor(key, node, visitor, path) {
    if (typeof visitor === 'function')
        return visitor(key, node, path);
    if (isMap(node))
        return visitor.Map?.(key, node, path);
    if (isSeq(node))
        return visitor.Seq?.(key, node, path);
    if (isPair(node))
        return visitor.Pair?.(key, node, path);
    if (isScalar(node))
        return visitor.Scalar?.(key, node, path);
    if (isAlias(node))
        return visitor.Alias?.(key, node, path);
    return undefined;
}
function replaceNode(key, path, node) {
    const parent = path[path.length - 1];
    if (isCollection(parent)) {
        parent.items[key] = node;
    }
    else if (isPair(parent)) {
        if (key === 'key')
            parent.key = node;
        else
            parent.value = node;
    }
    else if (isDocument(parent)) {
        parent.contents = node;
    }
    else {
        const pt = isAlias(parent) ? 'alias' : 'scalar';
        throw new Error(`Cannot replace node with ${pt} parent`);
    }
}

export { visit, visitAsync };


code:
// `export * as default from ...` fails on Webpack v4
// https://github.com/eemeli/yaml/issues/228
import * as YAML from './dist/index.js'
export default YAML
export * from './dist/index.js'


code:
export declare const help = "yaml: A command-line YAML processor and inspector\n\nReads stdin and writes output to stdout and errors & warnings to stderr.\n\nUsage:\n  yaml          Process a YAML stream, outputting it as YAML\n  yaml cst      Parse the CST of a YAML stream\n  yaml lex      Parse the lexical tokens of a YAML stream\n  yaml valid    Validate a YAML stream, returning 0 on success\n\nOptions:\n  --help, -h    Show this message.\n  --json, -j    Output JSON.\n  --indent 2    Output pretty-printed data, indented by the given number of spaces.\n\nAdditional options for bare \"yaml\" command:\n  --doc, -d     Output pretty-printed JS Document objects.\n  --single, -1  Require the input to consist of a single YAML document.\n  --strict, -s  Stop on errors.\n  --visit, -v   Apply a visitor to each document (requires a path to import)\n  --yaml 1.1    Set the YAML version. (default: 1.2)";
export declare class UserError extends Error {
    static ARGS: number;
    static SINGLE: number;
    code: number;
    constructor(code: number, message: string);
}
export declare function cli(stdin: NodeJS.ReadableStream, done: (error?: Error) => void, argv?: string[]): Promise<void>;


code:
import { resolve } from 'node:path';
import { parseArgs } from 'node:util';
import { prettyToken } from './parse/cst.js';
import { Lexer } from './parse/lexer.js';
import { Parser } from './parse/parser.js';
import { Composer } from './compose/composer.js';
import { LineCounter } from './parse/line-counter.js';
import { prettifyError } from './errors.js';
import { visit } from './visit.js';

const help = `\
yaml: A command-line YAML processor and inspector

Reads stdin and writes output to stdout and errors & warnings to stderr.

Usage:
  yaml          Process a YAML stream, outputting it as YAML
  yaml cst      Parse the CST of a YAML stream
  yaml lex      Parse the lexical tokens of a YAML stream
  yaml valid    Validate a YAML stream, returning 0 on success

Options:
  --help, -h    Show this message.
  --json, -j    Output JSON.
  --indent 2    Output pretty-printed data, indented by the given number of spaces.

Additional options for bare "yaml" command:
  --doc, -d     Output pretty-printed JS Document objects.
  --single, -1  Require the input to consist of a single YAML document.
  --strict, -s  Stop on errors.
  --visit, -v   Apply a visitor to each document (requires a path to import)
  --yaml 1.1    Set the YAML version. (default: 1.2)`;
class UserError extends Error {
    constructor(code, message) {
        super(`Error: ${message}`);
        this.code = code;
    }
}
UserError.ARGS = 2;
UserError.SINGLE = 3;
async function cli(stdin, done, argv) {
    let args;
    try {
        args = parseArgs({
            args: argv,
            allowPositionals: true,
            options: {
                doc: { type: 'boolean', short: 'd' },
                help: { type: 'boolean', short: 'h' },
                indent: { type: 'string', short: 'i' },
                json: { type: 'boolean', short: 'j' },
                single: { type: 'boolean', short: '1' },
                strict: { type: 'boolean', short: 's' },
                visit: { type: 'string', short: 'v' },
                yaml: { type: 'string', default: '1.2' }
            }
        });
    }
    catch (error) {
        return done(new UserError(UserError.ARGS, error.message));
    }
    const { positionals: [mode], values: opt } = args;
    let indent = Number(opt.indent);
    stdin.setEncoding('utf-8');
    // eslint-disable-next-line @typescript-eslint/prefer-nullish-coalescing
    switch (opt.help || mode) {
        /* istanbul ignore next */
        case true: // --help
            console.log(help);
            break;
        case 'lex': {
            const lexer = new Lexer();
            const data = [];
            const add = (tok) => {
                if (opt.json)
                    data.push(tok);
                else
                    console.log(prettyToken(tok));
            };
            stdin.on('data', (chunk) => {
                for (const tok of lexer.lex(chunk, true))
                    add(tok);
            });
            stdin.on('end', () => {
                for (const tok of lexer.lex('', false))
                    add(tok);
                if (opt.json)
                    console.log(JSON.stringify(data, null, indent));
                done();
            });
            break;
        }
        case 'cst': {
            const parser = new Parser();
            const data = [];
            const add = (tok) => {
                if (opt.json)
                    data.push(tok);
                else
                    console.dir(tok, { depth: null });
            };
            stdin.on('data', (chunk) => {
                for (const tok of parser.parse(chunk, true))
                    add(tok);
            });
            stdin.on('end', () => {
                for (const tok of parser.parse('', false))
                    add(tok);
                if (opt.json)
                    console.log(JSON.stringify(data, null, indent));
                done();
            });
            break;
        }
        case undefined:
        case 'valid': {
            const lineCounter = new LineCounter();
            const parser = new Parser(lineCounter.addNewLine);
            // @ts-expect-error Version is validated at runtime
            const composer = new Composer({ version: opt.yaml });
            const visitor = opt.visit
                ? (await import(resolve(opt.visit))).default
                : null;
            let source = '';
            let hasDoc = false;
            let reqDocEnd = false;
            const data = [];
            const add = (doc) => {
                if (hasDoc && opt.single) {
                    return done(new UserError(UserError.SINGLE, 'Input stream contains multiple documents'));
                }
                for (const error of doc.errors) {
                    prettifyError(source, lineCounter)(error);
                    if (opt.strict || mode === 'valid')
                        return done(error);
                    console.error(error);
                }
                for (const warning of doc.warnings) {
                    prettifyError(source, lineCounter)(warning);
                    console.error(warning);
                }
                if (visitor)
                    visit(doc, visitor);
                if (mode === 'valid')
                    doc.toJS();
                else if (opt.json)
                    data.push(doc);
                else if (opt.doc) {
                    Object.defineProperties(doc, {
                        options: { enumerable: false },
                        schema: { enumerable: false }
                    });
                    console.dir(doc, { depth: null });
                }
                else {
                    if (reqDocEnd)
                        console.log('...');
                    try {
                        indent || (indent = 2);
                        const str = doc.toString({ indent });
                        console.log(str.endsWith('\n') ? str.slice(0, -1) : str);
                    }
                    catch (error) {
                        done(error);
                    }
                }
                hasDoc = true;
                reqDocEnd = !doc.directives?.docEnd;
            };
            stdin.on('data', (chunk) => {
                source += chunk;
                for (const tok of parser.parse(chunk, true)) {
                    for (const doc of composer.next(tok))
                        add(doc);
                }
            });
            stdin.on('end', () => {
                for (const tok of parser.parse('', false)) {
                    for (const doc of composer.next(tok))
                        add(doc);
                }
                for (const doc of composer.end(false))
                    add(doc);
                if (opt.single && !hasDoc) {
                    return done(new UserError(UserError.SINGLE, 'Input stream contained no documents'));
                }
                if (mode !== 'valid' && opt.json) {
                    console.log(JSON.stringify(opt.single ? data[0] : data, null, indent));
                }
                done();
            });
            break;
        }
        default:
            done(new UserError(UserError.ARGS, `Unknown command: ${JSON.stringify(mode)}`));
    }
}

export { UserError, cli, help };


code:
import type { ParsedNode } from '../nodes/Node.js';
import type { BlockMap, BlockSequence, FlowCollection, SourceToken } from '../parse/cst.js';
import type { ComposeContext, ComposeNode } from './compose-node.js';
import type { ComposeErrorHandler } from './composer.js';
interface Props {
    anchor: SourceToken | null;
    tag: SourceToken | null;
    newlineAfterProp: SourceToken | null;
}
export declare function composeCollection(CN: ComposeNode, ctx: ComposeContext, token: BlockMap | BlockSequence | FlowCollection, props: Props, onError: ComposeErrorHandler): ParsedNode;
export {};


code:
'use strict';

var identity = require('../nodes/identity.js');
var Scalar = require('../nodes/Scalar.js');
var YAMLMap = require('../nodes/YAMLMap.js');
var YAMLSeq = require('../nodes/YAMLSeq.js');
var resolveBlockMap = require('./resolve-block-map.js');
var resolveBlockSeq = require('./resolve-block-seq.js');
var resolveFlowCollection = require('./resolve-flow-collection.js');

function resolveCollection(CN, ctx, token, onError, tagName, tag) {
    const coll = token.type === 'block-map'
        ? resolveBlockMap.resolveBlockMap(CN, ctx, token, onError, tag)
        : token.type === 'block-seq'
            ? resolveBlockSeq.resolveBlockSeq(CN, ctx, token, onError, tag)
            : resolveFlowCollection.resolveFlowCollection(CN, ctx, token, onError, tag);
    const Coll = coll.constructor;
    // If we got a tagName matching the class, or the tag name is '!',
    // then use the tagName from the node class used to create it.
    if (tagName === '!' || tagName === Coll.tagName) {
        coll.tag = Coll.tagName;
        return coll;
    }
    if (tagName)
        coll.tag = tagName;
    return coll;
}
function composeCollection(CN, ctx, token, props, onError) {
    const tagToken = props.tag;
    const tagName = !tagToken
        ? null
        : ctx.directives.tagName(tagToken.source, msg => onError(tagToken, 'TAG_RESOLVE_FAILED', msg));
    if (token.type === 'block-seq') {
        const { anchor, newlineAfterProp: nl } = props;
        const lastProp = anchor && tagToken
            ? anchor.offset > tagToken.offset
                ? anchor
                : tagToken
            : (anchor ?? tagToken);
        if (lastProp && (!nl || nl.offset < lastProp.offset)) {
            const message = 'Missing newline after block sequence props';
            onError(lastProp, 'MISSING_CHAR', message);
        }
    }
    const expType = token.type === 'block-map'
        ? 'map'
        : token.type === 'block-seq'
            ? 'seq'
            : token.start.source === '{'
                ? 'map'
                : 'seq';
    // shortcut: check if it's a generic YAMLMap or YAMLSeq
    // before jumping into the custom tag logic.
    if (!tagToken ||
        !tagName ||
        tagName === '!' ||
        (tagName === YAMLMap.YAMLMap.tagName && expType === 'map') ||
        (tagName === YAMLSeq.YAMLSeq.tagName && expType === 'seq')) {
        return resolveCollection(CN, ctx, token, onError, tagName);
    }
    let tag = ctx.schema.tags.find(t => t.tag === tagName && t.collection === expType);
    if (!tag) {
        const kt = ctx.schema.knownTags[tagName];
        if (kt && kt.collection === expType) {
            ctx.schema.tags.push(Object.assign({}, kt, { default: false }));
            tag = kt;
        }
        else {
            if (kt?.collection) {
                onError(tagToken, 'BAD_COLLECTION_TYPE', `${kt.tag} used for ${expType} collection, but expects ${kt.collection}`, true);
            }
            else {
                onError(tagToken, 'TAG_RESOLVE_FAILED', `Unresolved tag: ${tagName}`, true);
            }
            return resolveCollection(CN, ctx, token, onError, tagName);
        }
    }
    const coll = resolveCollection(CN, ctx, token, onError, tagName, tag);
    const res = tag.resolve?.(coll, msg => onError(tagToken, 'TAG_RESOLVE_FAILED', msg), ctx.options) ?? coll;
    const node = identity.isNode(res)
        ? res
        : new Scalar.Scalar(res);
    node.range = coll.range;
    node.tag = tagName;
    if (tag?.format)
        node.format = tag.format;
    return node;
}

exports.composeCollection = composeCollection;


code:
import type { Directives } from '../doc/directives.js';
import { Document } from '../doc/Document.js';
import type { ParsedNode } from '../nodes/Node.js';
import type { DocumentOptions, ParseOptions, SchemaOptions } from '../options.js';
import type * as CST from '../parse/cst.js';
import type { ComposeErrorHandler } from './composer.js';
export declare function composeDoc<Contents extends ParsedNode = ParsedNode, Strict extends boolean = true>(options: ParseOptions & DocumentOptions & SchemaOptions, directives: Directives, { offset, start, value, end }: CST.Document, onError: ComposeErrorHandler): Document.Parsed<Contents, Strict>;


code:
'use strict';

var Document = require('../doc/Document.js');
var composeNode = require('./compose-node.js');
var resolveEnd = require('./resolve-end.js');
var resolveProps = require('./resolve-props.js');

function composeDoc(options, directives, { offset, start, value, end }, onError) {
    const opts = Object.assign({ _directives: directives }, options);
    const doc = new Document.Document(undefined, opts);
    const ctx = {
        atRoot: true,
        directives: doc.directives,
        options: doc.options,
        schema: doc.schema
    };
    const props = resolveProps.resolveProps(start, {
        indicator: 'doc-start',
        next: value ?? end?.[0],
        offset,
        onError,
        parentIndent: 0,
        startOnNewline: true
    });
    if (props.found) {
        doc.directives.docStart = true;
        if (value &&
            (value.type === 'block-map' || value.type === 'block-seq') &&
            !props.hasNewline)
            onError(props.end, 'MISSING_CHAR', 'Block collection cannot start on same line with directives-end marker');
    }
    // @ts-expect-error If Contents is set, let's trust the user
    doc.contents = value
        ? composeNode.composeNode(ctx, value, props, onError)
        : composeNode.composeEmptyNode(ctx, props.end, start, null, props, onError);
    const contentEnd = doc.contents.range[2];
    const re = resolveEnd.resolveEnd(end, contentEnd, false, onError);
    if (re.comment)
        doc.comment = re.comment;
    doc.range = [offset, contentEnd, re.offset];
    return doc;
}

exports.composeDoc = composeDoc;


code:
import type { Directives } from '../doc/directives.js';
import type { ParsedNode } from '../nodes/Node.js';
import type { ParseOptions } from '../options.js';
import type { SourceToken, Token } from '../parse/cst.js';
import type { Schema } from '../schema/Schema.js';
import type { ComposeErrorHandler } from './composer.js';
export interface ComposeContext {
    atRoot: boolean;
    directives: Directives;
    options: Readonly<Required<Omit<ParseOptions, 'lineCounter'>>>;
    schema: Readonly<Schema>;
}
interface Props {
    spaceBefore: boolean;
    comment: string;
    anchor: SourceToken | null;
    tag: SourceToken | null;
    newlineAfterProp: SourceToken | null;
    end: number;
}
declare const CN: {
    composeNode: typeof composeNode;
    composeEmptyNode: typeof composeEmptyNode;
};
export type ComposeNode = typeof CN;
export declare function composeNode(ctx: ComposeContext, token: Token, props: Props, onError: ComposeErrorHandler): ParsedNode;
export declare function composeEmptyNode(ctx: ComposeContext, offset: number, before: Token[] | undefined, pos: number | null, { spaceBefore, comment, anchor, tag, end }: Props, onError: ComposeErrorHandler): import("../index.js").Scalar.Parsed;
export {};


code:
'use strict';

var Alias = require('../nodes/Alias.js');
var composeCollection = require('./compose-collection.js');
var composeScalar = require('./compose-scalar.js');
var resolveEnd = require('./resolve-end.js');
var utilEmptyScalarPosition = require('./util-empty-scalar-position.js');

const CN = { composeNode, composeEmptyNode };
function composeNode(ctx, token, props, onError) {
    const { spaceBefore, comment, anchor, tag } = props;
    let node;
    let isSrcToken = true;
    switch (token.type) {
        case 'alias':
            node = composeAlias(ctx, token, onError);
            if (anchor || tag)
                onError(token, 'ALIAS_PROPS', 'An alias node must not specify any properties');
            break;
        case 'scalar':
        case 'single-quoted-scalar':
        case 'double-quoted-scalar':
        case 'block-scalar':
            node = composeScalar.composeScalar(ctx, token, tag, onError);
            if (anchor)
                node.anchor = anchor.source.substring(1);
            break;
        case 'block-map':
        case 'block-seq':
        case 'flow-collection':
            node = composeCollection.composeCollection(CN, ctx, token, props, onError);
            if (anchor)
                node.anchor = anchor.source.substring(1);
            break;
        default: {
            const message = token.type === 'error'
                ? token.message
                : `Unsupported token (type: ${token.type})`;
            onError(token, 'UNEXPECTED_TOKEN', message);
            node = composeEmptyNode(ctx, token.offset, undefined, null, props, onError);
            isSrcToken = false;
        }
    }
    if (anchor && node.anchor === '')
        onError(anchor, 'BAD_ALIAS', 'Anchor cannot be an empty string');
    if (spaceBefore)
        node.spaceBefore = true;
    if (comment) {
        if (token.type === 'scalar' && token.source === '')
            node.comment = comment;
        else
            node.commentBefore = comment;
    }
    // @ts-expect-error Type checking misses meaning of isSrcToken
    if (ctx.options.keepSourceTokens && isSrcToken)
        node.srcToken = token;
    return node;
}
function composeEmptyNode(ctx, offset, before, pos, { spaceBefore, comment, anchor, tag, end }, onError) {
    const token = {
        type: 'scalar',
        offset: utilEmptyScalarPosition.emptyScalarPosition(offset, before, pos),
        indent: -1,
        source: ''
    };
    const node = composeScalar.composeScalar(ctx, token, tag, onError);
    if (anchor) {
        node.anchor = anchor.source.substring(1);
        if (node.anchor === '')
            onError(anchor, 'BAD_ALIAS', 'Anchor cannot be an empty string');
    }
    if (spaceBefore)
        node.spaceBefore = true;
    if (comment) {
        node.comment = comment;
        node.range[2] = end;
    }
    return node;
}
function composeAlias({ options }, { offset, source, end }, onError) {
    const alias = new Alias.Alias(source.substring(1));
    if (alias.source === '')
        onError(offset, 'BAD_ALIAS', 'Alias cannot be an empty string');
    if (alias.source.endsWith(':'))
        onError(offset + source.length - 1, 'BAD_ALIAS', 'Alias ending in : is ambiguous', true);
    const valueEnd = offset + source.length;
    const re = resolveEnd.resolveEnd(end, valueEnd, options.strict, onError);
    alias.range = [offset, valueEnd, re.offset];
    if (re.comment)
        alias.comment = re.comment;
    return alias;
}

exports.composeEmptyNode = composeEmptyNode;
exports.composeNode = composeNode;


code:
import { Scalar } from '../nodes/Scalar.js';
import type { BlockScalar, FlowScalar, SourceToken } from '../parse/cst.js';
import type { ComposeContext } from './compose-node.js';
import type { ComposeErrorHandler } from './composer.js';
export declare function composeScalar(ctx: ComposeContext, token: FlowScalar | BlockScalar, tagToken: SourceToken | null, onError: ComposeErrorHandler): Scalar.Parsed;


code:
'use strict';

var identity = require('../nodes/identity.js');
var Scalar = require('../nodes/Scalar.js');
var resolveBlockScalar = require('./resolve-block-scalar.js');
var resolveFlowScalar = require('./resolve-flow-scalar.js');

function composeScalar(ctx, token, tagToken, onError) {
    const { value, type, comment, range } = token.type === 'block-scalar'
        ? resolveBlockScalar.resolveBlockScalar(ctx, token, onError)
        : resolveFlowScalar.resolveFlowScalar(token, ctx.options.strict, onError);
    const tagName = tagToken
        ? ctx.directives.tagName(tagToken.source, msg => onError(tagToken, 'TAG_RESOLVE_FAILED', msg))
        : null;
    const tag = tagToken && tagName
        ? findScalarTagByName(ctx.schema, value, tagName, tagToken, onError)
        : token.type === 'scalar'
            ? findScalarTagByTest(ctx, value, token, onError)
            : ctx.schema[identity.SCALAR];
    let scalar;
    try {
        const res = tag.resolve(value, msg => onError(tagToken ?? token, 'TAG_RESOLVE_FAILED', msg), ctx.options);
        scalar = identity.isScalar(res) ? res : new Scalar.Scalar(res);
    }
    catch (error) {
        const msg = error instanceof Error ? error.message : String(error);
        onError(tagToken ?? token, 'TAG_RESOLVE_FAILED', msg);
        scalar = new Scalar.Scalar(value);
    }
    scalar.range = range;
    scalar.source = value;
    if (type)
        scalar.type = type;
    if (tagName)
        scalar.tag = tagName;
    if (tag.format)
        scalar.format = tag.format;
    if (comment)
        scalar.comment = comment;
    return scalar;
}
function findScalarTagByName(schema, value, tagName, tagToken, onError) {
    if (tagName === '!')
        return schema[identity.SCALAR]; // non-specific tag
    const matchWithTest = [];
    for (const tag of schema.tags) {
        if (!tag.collection && tag.tag === tagName) {
            if (tag.default && tag.test)
                matchWithTest.push(tag);
            else
                return tag;
        }
    }
    for (const tag of matchWithTest)
        if (tag.test?.test(value))
            return tag;
    const kt = schema.knownTags[tagName];
    if (kt && !kt.collection) {
        // Ensure that the known tag is available for stringifying,
        // but does not get used by default.
        schema.tags.push(Object.assign({}, kt, { default: false, test: undefined }));
        return kt;
    }
    onError(tagToken, 'TAG_RESOLVE_FAILED', `Unresolved tag: ${tagName}`, tagName !== 'tag:yaml.org,2002:str');
    return schema[identity.SCALAR];
}
function findScalarTagByTest({ directives, schema }, value, token, onError) {
    const tag = schema.tags.find(tag => tag.default && tag.test?.test(value)) || schema[identity.SCALAR];
    if (schema.compat) {
        const compat = schema.compat.find(tag => tag.default && tag.test?.test(value)) ??
            schema[identity.SCALAR];
        if (tag.tag !== compat.tag) {
            const ts = directives.tagString(tag.tag);
            const cs = directives.tagString(compat.tag);
            const msg = `Value may be parsed as either ${ts} or ${cs}`;
            onError(token, 'TAG_RESOLVE_FAILED', msg, true);
        }
    }
    return tag;
}

exports.composeScalar = composeScalar;


code:
import { Directives } from '../doc/directives.js';
import { Document } from '../doc/Document.js';
import { ErrorCode, YAMLParseError, YAMLWarning } from '../errors.js';
import type { ParsedNode, Range } from '../nodes/Node.js';
import type { DocumentOptions, ParseOptions, SchemaOptions } from '../options.js';
import type { Token } from '../parse/cst.js';
type ErrorSource = number | [number, number] | Range | {
    offset: number;
    source?: string;
};
export type ComposeErrorHandler = (source: ErrorSource, code: ErrorCode, message: string, warning?: boolean) => void;
/**
 * Compose a stream of CST nodes into a stream of YAML Documents.
 *
 * ```ts
 * import { Composer, Parser } from 'yaml'
 *
 * const src: string = ...
 * const tokens = new Parser().parse(src)
 * const docs = new Composer().compose(tokens)
 * ```
 */
export declare class Composer<Contents extends ParsedNode = ParsedNode, Strict extends boolean = true> {
    private directives;
    private doc;
    private options;
    private atDirectives;
    private prelude;
    private errors;
    private warnings;
    constructor(options?: ParseOptions & DocumentOptions & SchemaOptions);
    private onError;
    private decorate;
    /**
     * Current stream status information.
     *
     * Mostly useful at the end of input for an empty stream.
     */
    streamInfo(): {
        comment: string;
        directives: Directives;
        errors: YAMLParseError[];
        warnings: YAMLWarning[];
    };
    /**
     * Compose tokens into documents.
     *
     * @param forceDoc - If the stream contains no document, still emit a final document including any comments and directives that would be applied to a subsequent document.
     * @param endOffset - Should be set if `forceDoc` is also set, to set the document range end and to indicate errors correctly.
     */
    compose(tokens: Iterable<Token>, forceDoc?: boolean, endOffset?: number): Generator<Document.Parsed<Contents, Strict>, void, unknown>;
    /** Advance the composer by one CST token. */
    next(token: Token): Generator<Document.Parsed<Contents, Strict>, void, unknown>;
    /**
     * Call at end of input to yield any remaining document.
     *
     * @param forceDoc - If the stream contains no document, still emit a final document including any comments and directives that would be applied to a subsequent document.
     * @param endOffset - Should be set if `forceDoc` is also set, to set the document range end and to indicate errors correctly.
     */
    end(forceDoc?: boolean, endOffset?: number): Generator<Document.Parsed<Contents, Strict>, void, unknown>;
}
export {};


code:
'use strict';

var directives = require('../doc/directives.js');
var Document = require('../doc/Document.js');
var errors = require('../errors.js');
var identity = require('../nodes/identity.js');
var composeDoc = require('./compose-doc.js');
var resolveEnd = require('./resolve-end.js');

function getErrorPos(src) {
    if (typeof src === 'number')
        return [src, src + 1];
    if (Array.isArray(src))
        return src.length === 2 ? src : [src[0], src[1]];
    const { offset, source } = src;
    return [offset, offset + (typeof source === 'string' ? source.length : 1)];
}
function parsePrelude(prelude) {
    let comment = '';
    let atComment = false;
    let afterEmptyLine = false;
    for (let i = 0; i < prelude.length; ++i) {
        const source = prelude[i];
        switch (source[0]) {
            case '#':
                comment +=
                    (comment === '' ? '' : afterEmptyLine ? '\n\n' : '\n') +
                        (source.substring(1) || ' ');
                atComment = true;
                afterEmptyLine = false;
                break;
            case '%':
                if (prelude[i + 1]?.[0] !== '#')
                    i += 1;
                atComment = false;
                break;
            default:
                // This may be wrong after doc-end, but in that case it doesn't matter
                if (!atComment)
                    afterEmptyLine = true;
                atComment = false;
        }
    }
    return { comment, afterEmptyLine };
}
/**
 * Compose a stream of CST nodes into a stream of YAML Documents.
 *
 * ```ts
 * import { Composer, Parser } from 'yaml'
 *
 * const src: string = ...
 * const tokens = new Parser().parse(src)
 * const docs = new Composer().compose(tokens)
 * ```
 */
class Composer {
    constructor(options = {}) {
        this.doc = null;
        this.atDirectives = false;
        this.prelude = [];
        this.errors = [];
        this.warnings = [];
        this.onError = (source, code, message, warning) => {
            const pos = getErrorPos(source);
            if (warning)
                this.warnings.push(new errors.YAMLWarning(pos, code, message));
            else
                this.errors.push(new errors.YAMLParseError(pos, code, message));
        };
        // eslint-disable-next-line @typescript-eslint/prefer-nullish-coalescing
        this.directives = new directives.Directives({ version: options.version || '1.2' });
        this.options = options;
    }
    decorate(doc, afterDoc) {
        const { comment, afterEmptyLine } = parsePrelude(this.prelude);
        //console.log({ dc: doc.comment, prelude, comment })
        if (comment) {
            const dc = doc.contents;
            if (afterDoc) {
                doc.comment = doc.comment ? `${doc.comment}\n${comment}` : comment;
            }
            else if (afterEmptyLine || doc.directives.docStart || !dc) {
                doc.commentBefore = comment;
            }
            else if (identity.isCollection(dc) && !dc.flow && dc.items.length > 0) {
                let it = dc.items[0];
                if (identity.isPair(it))
                    it = it.key;
                const cb = it.commentBefore;
                it.commentBefore = cb ? `${comment}\n${cb}` : comment;
            }
            else {
                const cb = dc.commentBefore;
                dc.commentBefore = cb ? `${comment}\n${cb}` : comment;
            }
        }
        if (afterDoc) {
            Array.prototype.push.apply(doc.errors, this.errors);
            Array.prototype.push.apply(doc.warnings, this.warnings);
        }
        else {
            doc.errors = this.errors;
            doc.warnings = this.warnings;
        }
        this.prelude = [];
        this.errors = [];
        this.warnings = [];
    }
    /**
     * Current stream status information.
     *
     * Mostly useful at the end of input for an empty stream.
     */
    streamInfo() {
        return {
            comment: parsePrelude(this.prelude).comment,
            directives: this.directives,
            errors: this.errors,
            warnings: this.warnings
        };
    }
    /**
     * Compose tokens into documents.
     *
     * @param forceDoc - If the stream contains no document, still emit a final document including any comments and directives that would be applied to a subsequent document.
     * @param endOffset - Should be set if `forceDoc` is also set, to set the document range end and to indicate errors correctly.
     */
    *compose(tokens, forceDoc = false, endOffset = -1) {
        for (const token of tokens)
            yield* this.next(token);
        yield* this.end(forceDoc, endOffset);
    }
    /** Advance the composer by one CST token. */
    *next(token) {
        if (process.env.LOG_STREAM)
            console.dir(token, { depth: null });
        switch (token.type) {
            case 'directive':
                this.directives.add(token.source, (offset, message, warning) => {
                    const pos = getErrorPos(token);
                    pos[0] += offset;
                    this.onError(pos, 'BAD_DIRECTIVE', message, warning);
                });
                this.prelude.push(token.source);
                this.atDirectives = true;
                break;
            case 'document': {
                const doc = composeDoc.composeDoc(this.options, this.directives, token, this.onError);
                if (this.atDirectives && !doc.directives.docStart)
                    this.onError(token, 'MISSING_CHAR', 'Missing directives-end/doc-start indicator line');
                this.decorate(doc, false);
                if (this.doc)
                    yield this.doc;
                this.doc = doc;
                this.atDirectives = false;
                break;
            }
            case 'byte-order-mark':
            case 'space':
                break;
            case 'comment':
            case 'newline':
                this.prelude.push(token.source);
                break;
            case 'error': {
                const msg = token.source
                    ? `${token.message}: ${JSON.stringify(token.source)}`
                    : token.message;
                const error = new errors.YAMLParseError(getErrorPos(token), 'UNEXPECTED_TOKEN', msg);
                if (this.atDirectives || !this.doc)
                    this.errors.push(error);
                else
                    this.doc.errors.push(error);
                break;
            }
            case 'doc-end': {
                if (!this.doc) {
                    const msg = 'Unexpected doc-end without preceding document';
                    this.errors.push(new errors.YAMLParseError(getErrorPos(token), 'UNEXPECTED_TOKEN', msg));
                    break;
                }
                this.doc.directives.docEnd = true;
                const end = resolveEnd.resolveEnd(token.end, token.offset + token.source.length, this.doc.options.strict, this.onError);
                this.decorate(this.doc, true);
                if (end.comment) {
                    const dc = this.doc.comment;
                    this.doc.comment = dc ? `${dc}\n${end.comment}` : end.comment;
                }
                this.doc.range[2] = end.offset;
                break;
            }
            default:
                this.errors.push(new errors.YAMLParseError(getErrorPos(token), 'UNEXPECTED_TOKEN', `Unsupported token ${token.type}`));
        }
    }
    /**
     * Call at end of input to yield any remaining document.
     *
     * @param forceDoc - If the stream contains no document, still emit a final document including any comments and directives that would be applied to a subsequent document.
     * @param endOffset - Should be set if `forceDoc` is also set, to set the document range end and to indicate errors correctly.
     */
    *end(forceDoc = false, endOffset = -1) {
        if (this.doc) {
            this.decorate(this.doc, true);
            yield this.doc;
            this.doc = null;
        }
        else if (forceDoc) {
            const opts = Object.assign({ _directives: this.directives }, this.options);
            const doc = new Document.Document(undefined, opts);
            if (this.atDirectives)
                this.onError(endOffset, 'MISSING_CHAR', 'Missing directives-end indicator line');
            doc.range = [0, endOffset, endOffset];
            this.decorate(doc, false);
            yield doc;
        }
    }
}

exports.Composer = Composer;


code:
import { YAMLMap } from '../nodes/YAMLMap.js';
import type { BlockMap } from '../parse/cst.js';
import { CollectionTag } from '../schema/types.js';
import type { ComposeContext, ComposeNode } from './compose-node.js';
import type { ComposeErrorHandler } from './composer.js';
export declare function resolveBlockMap({ composeNode, composeEmptyNode }: ComposeNode, ctx: ComposeContext, bm: BlockMap, onError: ComposeErrorHandler, tag?: CollectionTag): YAMLMap.Parsed;


code:
'use strict';

var Pair = require('../nodes/Pair.js');
var YAMLMap = require('../nodes/YAMLMap.js');
var resolveProps = require('./resolve-props.js');
var utilContainsNewline = require('./util-contains-newline.js');
var utilFlowIndentCheck = require('./util-flow-indent-check.js');
var utilMapIncludes = require('./util-map-includes.js');

const startColMsg = 'All mapping items must start at the same column';
function resolveBlockMap({ composeNode, composeEmptyNode }, ctx, bm, onError, tag) {
    const NodeClass = tag?.nodeClass ?? YAMLMap.YAMLMap;
    const map = new NodeClass(ctx.schema);
    if (ctx.atRoot)
        ctx.atRoot = false;
    let offset = bm.offset;
    let commentEnd = null;
    for (const collItem of bm.items) {
        const { start, key, sep, value } = collItem;
        // key properties
        const keyProps = resolveProps.resolveProps(start, {
            indicator: 'explicit-key-ind',
            next: key ?? sep?.[0],
            offset,
            onError,
            parentIndent: bm.indent,
            startOnNewline: true
        });
        const implicitKey = !keyProps.found;
        if (implicitKey) {
            if (key) {
                if (key.type === 'block-seq')
                    onError(offset, 'BLOCK_AS_IMPLICIT_KEY', 'A block sequence may not be used as an implicit map key');
                else if ('indent' in key && key.indent !== bm.indent)
                    onError(offset, 'BAD_INDENT', startColMsg);
            }
            if (!keyProps.anchor && !keyProps.tag && !sep) {
                commentEnd = keyProps.end;
                if (keyProps.comment) {
                    if (map.comment)
                        map.comment += '\n' + keyProps.comment;
                    else
                        map.comment = keyProps.comment;
                }
                continue;
            }
            if (keyProps.newlineAfterProp || utilContainsNewline.containsNewline(key)) {
                onError(key ?? start[start.length - 1], 'MULTILINE_IMPLICIT_KEY', 'Implicit keys need to be on a single line');
            }
        }
        else if (keyProps.found?.indent !== bm.indent) {
            onError(offset, 'BAD_INDENT', startColMsg);
        }
        // key value
        const keyStart = keyProps.end;
        const keyNode = key
            ? composeNode(ctx, key, keyProps, onError)
            : composeEmptyNode(ctx, keyStart, start, null, keyProps, onError);
        if (ctx.schema.compat)
            utilFlowIndentCheck.flowIndentCheck(bm.indent, key, onError);
        if (utilMapIncludes.mapIncludes(ctx, map.items, keyNode))
            onError(keyStart, 'DUPLICATE_KEY', 'Map keys must be unique');
        // value properties
        const valueProps = resolveProps.resolveProps(sep ?? [], {
            indicator: 'map-value-ind',
            next: value,
            offset: keyNode.range[2],
            onError,
            parentIndent: bm.indent,
            startOnNewline: !key || key.type === 'block-scalar'
        });
        offset = valueProps.end;
        if (valueProps.found) {
            if (implicitKey) {
                if (value?.type === 'block-map' && !valueProps.hasNewline)
                    onError(offset, 'BLOCK_AS_IMPLICIT_KEY', 'Nested mappings are not allowed in compact mappings');
                if (ctx.options.strict &&
                    keyProps.start < valueProps.found.offset - 1024)
                    onError(keyNode.range, 'KEY_OVER_1024_CHARS', 'The : indicator must be at most 1024 chars after the start of an implicit block mapping key');
            }
            // value value
            const valueNode = value
                ? composeNode(ctx, value, valueProps, onError)
                : composeEmptyNode(ctx, offset, sep, null, valueProps, onError);
            if (ctx.schema.compat)
                utilFlowIndentCheck.flowIndentCheck(bm.indent, value, onError);
            offset = valueNode.range[2];
            const pair = new Pair.Pair(keyNode, valueNode);
            if (ctx.options.keepSourceTokens)
                pair.srcToken = collItem;
            map.items.push(pair);
        }
        else {
            // key with no value
            if (implicitKey)
                onError(keyNode.range, 'MISSING_CHAR', 'Implicit map keys need to be followed by map values');
            if (valueProps.comment) {
                if (keyNode.comment)
                    keyNode.comment += '\n' + valueProps.comment;
                else
                    keyNode.comment = valueProps.comment;
            }
            const pair = new Pair.Pair(keyNode);
            if (ctx.options.keepSourceTokens)
                pair.srcToken = collItem;
            map.items.push(pair);
        }
    }
    if (commentEnd && commentEnd < offset)
        onError(commentEnd, 'IMPOSSIBLE', 'Map comment with trailing content');
    map.range = [bm.offset, offset, commentEnd ?? offset];
    return map;
}

exports.resolveBlockMap = resolveBlockMap;


code:
import { Range } from '../nodes/Node.js';
import { Scalar } from '../nodes/Scalar.js';
import type { BlockScalar } from '../parse/cst.js';
import type { ComposeContext } from './compose-node.js';
import type { ComposeErrorHandler } from './composer.js';
export declare function resolveBlockScalar(ctx: ComposeContext, scalar: BlockScalar, onError: ComposeErrorHandler): {
    value: string;
    type: Scalar.BLOCK_FOLDED | Scalar.BLOCK_LITERAL | null;
    comment: string;
    range: Range;
};


code:
'use strict';

var Scalar = require('../nodes/Scalar.js');

function resolveBlockScalar(ctx, scalar, onError) {
    const start = scalar.offset;
    const header = parseBlockScalarHeader(scalar, ctx.options.strict, onError);
    if (!header)
        return { value: '', type: null, comment: '', range: [start, start, start] };
    const type = header.mode === '>' ? Scalar.Scalar.BLOCK_FOLDED : Scalar.Scalar.BLOCK_LITERAL;
    const lines = scalar.source ? splitLines(scalar.source) : [];
    // determine the end of content & start of chomping
    let chompStart = lines.length;
    for (let i = lines.length - 1; i >= 0; --i) {
        const content = lines[i][1];
        if (content === '' || content === '\r')
            chompStart = i;
        else
            break;
    }
    // shortcut for empty contents
    if (chompStart === 0) {
        const value = header.chomp === '+' && lines.length > 0
            ? '\n'.repeat(Math.max(1, lines.length - 1))
            : '';
        let end = start + header.length;
        if (scalar.source)
            end += scalar.source.length;
        return { value, type, comment: header.comment, range: [start, end, end] };
    }
    // find the indentation level to trim from start
    let trimIndent = scalar.indent + header.indent;
    let offset = scalar.offset + header.length;
    let contentStart = 0;
    for (let i = 0; i < chompStart; ++i) {
        const [indent, content] = lines[i];
        if (content === '' || content === '\r') {
            if (header.indent === 0 && indent.length > trimIndent)
                trimIndent = indent.length;
        }
        else {
            if (indent.length < trimIndent) {
                const message = 'Block scalars with more-indented leading empty lines must use an explicit indentation indicator';
                onError(offset + indent.length, 'MISSING_CHAR', message);
            }
            if (header.indent === 0)
                trimIndent = indent.length;
            contentStart = i;
            if (trimIndent === 0 && !ctx.atRoot) {
                const message = 'Block scalar values in collections must be indented';
                onError(offset, 'BAD_INDENT', message);
            }
            break;
        }
        offset += indent.length + content.length + 1;
    }
    // include trailing more-indented empty lines in content
    for (let i = lines.length - 1; i >= chompStart; --i) {
        if (lines[i][0].length > trimIndent)
            chompStart = i + 1;
    }
    let value = '';
    let sep = '';
    let prevMoreIndented = false;
    // leading whitespace is kept intact
    for (let i = 0; i < contentStart; ++i)
        value += lines[i][0].slice(trimIndent) + '\n';
    for (let i = contentStart; i < chompStart; ++i) {
        let [indent, content] = lines[i];
        offset += indent.length + content.length + 1;
        const crlf = content[content.length - 1] === '\r';
        if (crlf)
            content = content.slice(0, -1);
        /* istanbul ignore if already caught in lexer */
        if (content && indent.length < trimIndent) {
            const src = header.indent
                ? 'explicit indentation indicator'
                : 'first line';
            const message = `Block scalar lines must not be less indented than their ${src}`;
            onError(offset - content.length - (crlf ? 2 : 1), 'BAD_INDENT', message);
            indent = '';
        }
        if (type === Scalar.Scalar.BLOCK_LITERAL) {
            value += sep + indent.slice(trimIndent) + content;
            sep = '\n';
        }
        else if (indent.length > trimIndent || content[0] === '\t') {
            // more-indented content within a folded block
            if (sep === ' ')
                sep = '\n';
            else if (!prevMoreIndented && sep === '\n')
                sep = '\n\n';
            value += sep + indent.slice(trimIndent) + content;
            sep = '\n';
            prevMoreIndented = true;
        }
        else if (content === '') {
            // empty line
            if (sep === '\n')
                value += '\n';
            else
                sep = '\n';
        }
        else {
            value += sep + content;
            sep = ' ';
            prevMoreIndented = false;
        }
    }
    switch (header.chomp) {
        case '-':
            break;
        case '+':
            for (let i = chompStart; i < lines.length; ++i)
                value += '\n' + lines[i][0].slice(trimIndent);
            if (value[value.length - 1] !== '\n')
                value += '\n';
            break;
        default:
            value += '\n';
    }
    const end = start + header.length + scalar.source.length;
    return { value, type, comment: header.comment, range: [start, end, end] };
}
function parseBlockScalarHeader({ offset, props }, strict, onError) {
    /* istanbul ignore if should not happen */
    if (props[0].type !== 'block-scalar-header') {
        onError(props[0], 'IMPOSSIBLE', 'Block scalar header not found');
        return null;
    }
    const { source } = props[0];
    const mode = source[0];
    let indent = 0;
    let chomp = '';
    let error = -1;
    for (let i = 1; i < source.length; ++i) {
        const ch = source[i];
        if (!chomp && (ch === '-' || ch === '+'))
            chomp = ch;
        else {
            const n = Number(ch);
            if (!indent && n)
                indent = n;
            else if (error === -1)
                error = offset + i;
        }
    }
    if (error !== -1)
        onError(error, 'UNEXPECTED_TOKEN', `Block scalar header includes extra characters: ${source}`);
    let hasSpace = false;
    let comment = '';
    let length = source.length;
    for (let i = 1; i < props.length; ++i) {
        const token = props[i];
        switch (token.type) {
            case 'space':
                hasSpace = true;
            // fallthrough
            case 'newline':
                length += token.source.length;
                break;
            case 'comment':
                if (strict && !hasSpace) {
                    const message = 'Comments must be separated from other tokens by white space characters';
                    onError(token, 'MISSING_CHAR', message);
                }
                length += token.source.length;
                comment = token.source.substring(1);
                break;
            case 'error':
                onError(token, 'UNEXPECTED_TOKEN', token.message);
                length += token.source.length;
                break;
            /* istanbul ignore next should not happen */
            default: {
                const message = `Unexpected token in block scalar header: ${token.type}`;
                onError(token, 'UNEXPECTED_TOKEN', message);
                const ts = token.source;
                if (ts && typeof ts === 'string')
                    length += ts.length;
            }
        }
    }
    return { mode, indent, chomp, comment, length };
}
/** @returns Array of lines split up as `[indent, content]` */
function splitLines(source) {
    const split = source.split(/\n( *)/);
    const first = split[0];
    const m = first.match(/^( *)/);
    const line0 = m?.[1]
        ? [m[1], first.slice(m[1].length)]
        : ['', first];
    const lines = [line0];
    for (let i = 1; i < split.length; i += 2)
        lines.push([split[i], split[i + 1]]);
    return lines;
}

exports.resolveBlockScalar = resolveBlockScalar;


code:
import { YAMLSeq } from '../nodes/YAMLSeq.js';
import type { BlockSequence } from '../parse/cst.js';
import { CollectionTag } from '../schema/types.js';
import type { ComposeContext, ComposeNode } from './compose-node.js';
import type { ComposeErrorHandler } from './composer.js';
export declare function resolveBlockSeq({ composeNode, composeEmptyNode }: ComposeNode, ctx: ComposeContext, bs: BlockSequence, onError: ComposeErrorHandler, tag?: CollectionTag): YAMLSeq.Parsed;


code:
'use strict';

var YAMLSeq = require('../nodes/YAMLSeq.js');
var resolveProps = require('./resolve-props.js');
var utilFlowIndentCheck = require('./util-flow-indent-check.js');

function resolveBlockSeq({ composeNode, composeEmptyNode }, ctx, bs, onError, tag) {
    const NodeClass = tag?.nodeClass ?? YAMLSeq.YAMLSeq;
    const seq = new NodeClass(ctx.schema);
    if (ctx.atRoot)
        ctx.atRoot = false;
    let offset = bs.offset;
    let commentEnd = null;
    for (const { start, value } of bs.items) {
        const props = resolveProps.resolveProps(start, {
            indicator: 'seq-item-ind',
            next: value,
            offset,
            onError,
            parentIndent: bs.indent,
            startOnNewline: true
        });
        if (!props.found) {
            if (props.anchor || props.tag || value) {
                if (value && value.type === 'block-seq')
                    onError(props.end, 'BAD_INDENT', 'All sequence items must start at the same column');
                else
                    onError(offset, 'MISSING_CHAR', 'Sequence item without - indicator');
            }
            else {
                commentEnd = props.end;
                if (props.comment)
                    seq.comment = props.comment;
                continue;
            }
        }
        const node = value
            ? composeNode(ctx, value, props, onError)
            : composeEmptyNode(ctx, props.end, start, null, props, onError);
        if (ctx.schema.compat)
            utilFlowIndentCheck.flowIndentCheck(bs.indent, value, onError);
        offset = node.range[2];
        seq.items.push(node);
    }
    seq.range = [bs.offset, offset, commentEnd ?? offset];
    return seq;
}

exports.resolveBlockSeq = resolveBlockSeq;


code:
import type { SourceToken } from '../parse/cst.js';
import type { ComposeErrorHandler } from './composer.js';
export declare function resolveEnd(end: SourceToken[] | undefined, offset: number, reqSpace: boolean, onError: ComposeErrorHandler): {
    comment: string;
    offset: number;
};


code:
'use strict';

function resolveEnd(end, offset, reqSpace, onError) {
    let comment = '';
    if (end) {
        let hasSpace = false;
        let sep = '';
        for (const token of end) {
            const { source, type } = token;
            switch (type) {
                case 'space':
                    hasSpace = true;
                    break;
                case 'comment': {
                    if (reqSpace && !hasSpace)
                        onError(token, 'MISSING_CHAR', 'Comments must be separated from other tokens by white space characters');
                    const cb = source.substring(1) || ' ';
                    if (!comment)
                        comment = cb;
                    else
                        comment += sep + cb;
                    sep = '';
                    break;
                }
                case 'newline':
                    if (comment)
                        sep += source;
                    hasSpace = true;
                    break;
                default:
                    onError(token, 'UNEXPECTED_TOKEN', `Unexpected ${type} at node end`);
            }
            offset += source.length;
        }
    }
    return { comment, offset };
}

exports.resolveEnd = resolveEnd;


code:
import { YAMLMap } from '../nodes/YAMLMap.js';
import { YAMLSeq } from '../nodes/YAMLSeq.js';
import type { FlowCollection } from '../parse/cst.js';
import { CollectionTag } from '../schema/types.js';
import type { ComposeContext, ComposeNode } from './compose-node.js';
import type { ComposeErrorHandler } from './composer.js';
export declare function resolveFlowCollection({ composeNode, composeEmptyNode }: ComposeNode, ctx: ComposeContext, fc: FlowCollection, onError: ComposeErrorHandler, tag?: CollectionTag): YAMLMap.Parsed<import("../index.js").ParsedNode, import("../index.js").ParsedNode | null> | YAMLSeq.Parsed<import("../index.js").ParsedNode>;


code:
'use strict';

var identity = require('../nodes/identity.js');
var Pair = require('../nodes/Pair.js');
var YAMLMap = require('../nodes/YAMLMap.js');
var YAMLSeq = require('../nodes/YAMLSeq.js');
var resolveEnd = require('./resolve-end.js');
var resolveProps = require('./resolve-props.js');
var utilContainsNewline = require('./util-contains-newline.js');
var utilMapIncludes = require('./util-map-includes.js');

const blockMsg = 'Block collections are not allowed within flow collections';
const isBlock = (token) => token && (token.type === 'block-map' || token.type === 'block-seq');
function resolveFlowCollection({ composeNode, composeEmptyNode }, ctx, fc, onError, tag) {
    const isMap = fc.start.source === '{';
    const fcName = isMap ? 'flow map' : 'flow sequence';
    const NodeClass = (tag?.nodeClass ?? (isMap ? YAMLMap.YAMLMap : YAMLSeq.YAMLSeq));
    const coll = new NodeClass(ctx.schema);
    coll.flow = true;
    const atRoot = ctx.atRoot;
    if (atRoot)
        ctx.atRoot = false;
    let offset = fc.offset + fc.start.source.length;
    for (let i = 0; i < fc.items.length; ++i) {
        const collItem = fc.items[i];
        const { start, key, sep, value } = collItem;
        const props = resolveProps.resolveProps(start, {
            flow: fcName,
            indicator: 'explicit-key-ind',
            next: key ?? sep?.[0],
            offset,
            onError,
            parentIndent: fc.indent,
            startOnNewline: false
        });
        if (!props.found) {
            if (!props.anchor && !props.tag && !sep && !value) {
                if (i === 0 && props.comma)
                    onError(props.comma, 'UNEXPECTED_TOKEN', `Unexpected , in ${fcName}`);
                else if (i < fc.items.length - 1)
                    onError(props.start, 'UNEXPECTED_TOKEN', `Unexpected empty item in ${fcName}`);
                if (props.comment) {
                    if (coll.comment)
                        coll.comment += '\n' + props.comment;
                    else
                        coll.comment = props.comment;
                }
                offset = props.end;
                continue;
            }
            if (!isMap && ctx.options.strict && utilContainsNewline.containsNewline(key))
                onError(key, // checked by containsNewline()
                'MULTILINE_IMPLICIT_KEY', 'Implicit keys of flow sequence pairs need to be on a single line');
        }
        if (i === 0) {
            if (props.comma)
                onError(props.comma, 'UNEXPECTED_TOKEN', `Unexpected , in ${fcName}`);
        }
        else {
            if (!props.comma)
                onError(props.start, 'MISSING_CHAR', `Missing , between ${fcName} items`);
            if (props.comment) {
                let prevItemComment = '';
                loop: for (const st of start) {
                    switch (st.type) {
                        case 'comma':
                        case 'space':
                            break;
                        case 'comment':
                            prevItemComment = st.source.substring(1);
                            break loop;
                        default:
                            break loop;
                    }
                }
                if (prevItemComment) {
                    let prev = coll.items[coll.items.length - 1];
                    if (identity.isPair(prev))
                        prev = prev.value ?? prev.key;
                    if (prev.comment)
                        prev.comment += '\n' + prevItemComment;
                    else
                        prev.comment = prevItemComment;
                    props.comment = props.comment.substring(prevItemComment.length + 1);
                }
            }
        }
        if (!isMap && !sep && !props.found) {
            // item is a value in a seq
            // → key & sep are empty, start does not include ? or :
            const valueNode = value
                ? composeNode(ctx, value, props, onError)
                : composeEmptyNode(ctx, props.end, sep, null, props, onError);
            coll.items.push(valueNode);
            offset = valueNode.range[2];
            if (isBlock(value))
                onError(valueNode.range, 'BLOCK_IN_FLOW', blockMsg);
        }
        else {
            // item is a key+value pair
            // key value
            const keyStart = props.end;
            const keyNode = key
                ? composeNode(ctx, key, props, onError)
                : composeEmptyNode(ctx, keyStart, start, null, props, onError);
            if (isBlock(key))
                onError(keyNode.range, 'BLOCK_IN_FLOW', blockMsg);
            // value properties
            const valueProps = resolveProps.resolveProps(sep ?? [], {
                flow: fcName,
                indicator: 'map-value-ind',
                next: value,
                offset: keyNode.range[2],
                onError,
                parentIndent: fc.indent,
                startOnNewline: false
            });
            if (valueProps.found) {
                if (!isMap && !props.found && ctx.options.strict) {
                    if (sep)
                        for (const st of sep) {
                            if (st === valueProps.found)
                                break;
                            if (st.type === 'newline') {
                                onError(st, 'MULTILINE_IMPLICIT_KEY', 'Implicit keys of flow sequence pairs need to be on a single line');
                                break;
                            }
                        }
                    if (props.start < valueProps.found.offset - 1024)
                        onError(valueProps.found, 'KEY_OVER_1024_CHARS', 'The : indicator must be at most 1024 chars after the start of an implicit flow sequence key');
                }
            }
            else if (value) {
                if ('source' in value && value.source && value.source[0] === ':')
                    onError(value, 'MISSING_CHAR', `Missing space after : in ${fcName}`);
                else
                    onError(valueProps.start, 'MISSING_CHAR', `Missing , or : between ${fcName} items`);
            }
            // value value
            const valueNode = value
                ? composeNode(ctx, value, valueProps, onError)
                : valueProps.found
                    ? composeEmptyNode(ctx, valueProps.end, sep, null, valueProps, onError)
                    : null;
            if (valueNode) {
                if (isBlock(value))
                    onError(valueNode.range, 'BLOCK_IN_FLOW', blockMsg);
            }
            else if (valueProps.comment) {
                if (keyNode.comment)
                    keyNode.comment += '\n' + valueProps.comment;
                else
                    keyNode.comment = valueProps.comment;
            }
            const pair = new Pair.Pair(keyNode, valueNode);
            if (ctx.options.keepSourceTokens)
                pair.srcToken = collItem;
            if (isMap) {
                const map = coll;
                if (utilMapIncludes.mapIncludes(ctx, map.items, keyNode))
                    onError(keyStart, 'DUPLICATE_KEY', 'Map keys must be unique');
                map.items.push(pair);
            }
            else {
                const map = new YAMLMap.YAMLMap(ctx.schema);
                map.flow = true;
                map.items.push(pair);
                const endRange = (valueNode ?? keyNode).range;
                map.range = [keyNode.range[0], endRange[1], endRange[2]];
                coll.items.push(map);
            }
            offset = valueNode ? valueNode.range[2] : valueProps.end;
        }
    }
    const expectedEnd = isMap ? '}' : ']';
    const [ce, ...ee] = fc.end;
    let cePos = offset;
    if (ce && ce.source === expectedEnd)
        cePos = ce.offset + ce.source.length;
    else {
        const name = fcName[0].toUpperCase() + fcName.substring(1);
        const msg = atRoot
            ? `${name} must end with a ${expectedEnd}`
            : `${name} in block collection must be sufficiently indented and end with a ${expectedEnd}`;
        onError(offset, atRoot ? 'MISSING_CHAR' : 'BAD_INDENT', msg);
        if (ce && ce.source.length !== 1)
            ee.unshift(ce);
    }
    if (ee.length > 0) {
        const end = resolveEnd.resolveEnd(ee, cePos, ctx.options.strict, onError);
        if (end.comment) {
            if (coll.comment)
                coll.comment += '\n' + end.comment;
            else
                coll.comment = end.comment;
        }
        coll.range = [fc.offset, cePos, end.offset];
    }
    else {
        coll.range = [fc.offset, cePos, cePos];
    }
    return coll;
}

exports.resolveFlowCollection = resolveFlowCollection;


code:
import { Range } from '../nodes/Node.js';
import { Scalar } from '../nodes/Scalar.js';
import type { FlowScalar } from '../parse/cst.js';
import type { ComposeErrorHandler } from './composer.js';
export declare function resolveFlowScalar(scalar: FlowScalar, strict: boolean, onError: ComposeErrorHandler): {
    value: string;
    type: Scalar.PLAIN | Scalar.QUOTE_DOUBLE | Scalar.QUOTE_SINGLE | null;
    comment: string;
    range: Range;
};


code:
'use strict';

var Scalar = require('../nodes/Scalar.js');
var resolveEnd = require('./resolve-end.js');

function resolveFlowScalar(scalar, strict, onError) {
    const { offset, type, source, end } = scalar;
    let _type;
    let value;
    const _onError = (rel, code, msg) => onError(offset + rel, code, msg);
    switch (type) {
        case 'scalar':
            _type = Scalar.Scalar.PLAIN;
            value = plainValue(source, _onError);
            break;
        case 'single-quoted-scalar':
            _type = Scalar.Scalar.QUOTE_SINGLE;
            value = singleQuotedValue(source, _onError);
            break;
        case 'double-quoted-scalar':
            _type = Scalar.Scalar.QUOTE_DOUBLE;
            value = doubleQuotedValue(source, _onError);
            break;
        /* istanbul ignore next should not happen */
        default:
            onError(scalar, 'UNEXPECTED_TOKEN', `Expected a flow scalar value, but found: ${type}`);
            return {
                value: '',
                type: null,
                comment: '',
                range: [offset, offset + source.length, offset + source.length]
            };
    }
    const valueEnd = offset + source.length;
    const re = resolveEnd.resolveEnd(end, valueEnd, strict, onError);
    return {
        value,
        type: _type,
        comment: re.comment,
        range: [offset, valueEnd, re.offset]
    };
}
function plainValue(source, onError) {
    let badChar = '';
    switch (source[0]) {
        /* istanbul ignore next should not happen */
        case '\t':
            badChar = 'a tab character';
            break;
        case ',':
            badChar = 'flow indicator character ,';
            break;
        case '%':
            badChar = 'directive indicator character %';
            break;
        case '|':
        case '>': {
            badChar = `block scalar indicator ${source[0]}`;
            break;
        }
        case '@':
        case '`': {
            badChar = `reserved character ${source[0]}`;
            break;
        }
    }
    if (badChar)
        onError(0, 'BAD_SCALAR_START', `Plain value cannot start with ${badChar}`);
    return foldLines(source);
}
function singleQuotedValue(source, onError) {
    if (source[source.length - 1] !== "'" || source.length === 1)
        onError(source.length, 'MISSING_CHAR', "Missing closing 'quote");
    return foldLines(source.slice(1, -1)).replace(/''/g, "'");
}
function foldLines(source) {
    /**
     * The negative lookbehind here and in the `re` RegExp is to
     * prevent causing a polynomial search time in certain cases.
     *
     * The try-catch is for Safari, which doesn't support this yet:
     * https://caniuse.com/js-regexp-lookbehind
     */
    let first, line;
    try {
        first = new RegExp('(.*?)(?<![ \t])[ \t]*\r?\n', 'sy');
        line = new RegExp('[ \t]*(.*?)(?:(?<![ \t])[ \t]*)?\r?\n', 'sy');
    }
    catch {
        first = /(.*?)[ \t]*\r?\n/sy;
        line = /[ \t]*(.*?)[ \t]*\r?\n/sy;
    }
    let match = first.exec(source);
    if (!match)
        return source;
    let res = match[1];
    let sep = ' ';
    let pos = first.lastIndex;
    line.lastIndex = pos;
    while ((match = line.exec(source))) {
        if (match[1] === '') {
            if (sep === '\n')
                res += sep;
            else
                sep = '\n';
        }
        else {
            res += sep + match[1];
            sep = ' ';
        }
        pos = line.lastIndex;
    }
    const last = /[ \t]*(.*)/sy;
    last.lastIndex = pos;
    match = last.exec(source);
    return res + sep + (match?.[1] ?? '');
}
function doubleQuotedValue(source, onError) {
    let res = '';
    for (let i = 1; i < source.length - 1; ++i) {
        const ch = source[i];
        if (ch === '\r' && source[i + 1] === '\n')
            continue;
        if (ch === '\n') {
            const { fold, offset } = foldNewline(source, i);
            res += fold;
            i = offset;
        }
        else if (ch === '\\') {
            let next = source[++i];
            const cc = escapeCodes[next];
            if (cc)
                res += cc;
            else if (next === '\n') {
                // skip escaped newlines, but still trim the following line
                next = source[i + 1];
                while (next === ' ' || next === '\t')
                    next = source[++i + 1];
            }
            else if (next === '\r' && source[i + 1] === '\n') {
                // skip escaped CRLF newlines, but still trim the following line
                next = source[++i + 1];
                while (next === ' ' || next === '\t')
                    next = source[++i + 1];
            }
            else if (next === 'x' || next === 'u' || next === 'U') {
                const length = { x: 2, u: 4, U: 8 }[next];
                res += parseCharCode(source, i + 1, length, onError);
                i += length;
            }
            else {
                const raw = source.substr(i - 1, 2);
                onError(i - 1, 'BAD_DQ_ESCAPE', `Invalid escape sequence ${raw}`);
                res += raw;
            }
        }
        else if (ch === ' ' || ch === '\t') {
            // trim trailing whitespace
            const wsStart = i;
            let next = source[i + 1];
            while (next === ' ' || next === '\t')
                next = source[++i + 1];
            if (next !== '\n' && !(next === '\r' && source[i + 2] === '\n'))
                res += i > wsStart ? source.slice(wsStart, i + 1) : ch;
        }
        else {
            res += ch;
        }
    }
    if (source[source.length - 1] !== '"' || source.length === 1)
        onError(source.length, 'MISSING_CHAR', 'Missing closing "quote');
    return res;
}
/**
 * Fold a single newline into a space, multiple newlines to N - 1 newlines.
 * Presumes `source[offset] === '\n'`
 */
function foldNewline(source, offset) {
    let fold = '';
    let ch = source[offset + 1];
    while (ch === ' ' || ch === '\t' || ch === '\n' || ch === '\r') {
        if (ch === '\r' && source[offset + 2] !== '\n')
            break;
        if (ch === '\n')
            fold += '\n';
        offset += 1;
        ch = source[offset + 1];
    }
    if (!fold)
        fold = ' ';
    return { fold, offset };
}
const escapeCodes = {
    '0': '\0', // null character
    a: '\x07', // bell character
    b: '\b', // backspace
    e: '\x1b', // escape character
    f: '\f', // form feed
    n: '\n', // line feed
    r: '\r', // carriage return
    t: '\t', // horizontal tab
    v: '\v', // vertical tab
    N: '\u0085', // Unicode next line
    _: '\u00a0', // Unicode non-breaking space
    L: '\u2028', // Unicode line separator
    P: '\u2029', // Unicode paragraph separator
    ' ': ' ',
    '"': '"',
    '/': '/',
    '\\': '\\',
    '\t': '\t'
};
function parseCharCode(source, offset, length, onError) {
    const cc = source.substr(offset, length);
    const ok = cc.length === length && /^[0-9a-fA-F]+$/.test(cc);
    const code = ok ? parseInt(cc, 16) : NaN;
    if (isNaN(code)) {
        const raw = source.substr(offset - 2, length + 2);
        onError(offset - 2, 'BAD_DQ_ESCAPE', `Invalid escape sequence ${raw}`);
        return raw;
    }
    return String.fromCodePoint(code);
}

exports.resolveFlowScalar = resolveFlowScalar;


code:
import type { SourceToken, Token } from '../parse/cst.js';
import type { ComposeErrorHandler } from './composer.js';
export interface ResolvePropsArg {
    flow?: 'flow map' | 'flow sequence';
    indicator: 'doc-start' | 'explicit-key-ind' | 'map-value-ind' | 'seq-item-ind';
    next: Token | null | undefined;
    offset: number;
    onError: ComposeErrorHandler;
    parentIndent: number;
    startOnNewline: boolean;
}
export declare function resolveProps(tokens: SourceToken[], { flow, indicator, next, offset, onError, parentIndent, startOnNewline }: ResolvePropsArg): {
    comma: SourceToken | null;
    found: SourceToken | null;
    spaceBefore: boolean;
    comment: string;
    hasNewline: boolean;
    anchor: SourceToken | null;
    tag: SourceToken | null;
    newlineAfterProp: SourceToken | null;
    end: number;
    start: number;
};


code:
'use strict';

function resolveProps(tokens, { flow, indicator, next, offset, onError, parentIndent, startOnNewline }) {
    let spaceBefore = false;
    let atNewline = startOnNewline;
    let hasSpace = startOnNewline;
    let comment = '';
    let commentSep = '';
    let hasNewline = false;
    let reqSpace = false;
    let tab = null;
    let anchor = null;
    let tag = null;
    let newlineAfterProp = null;
    let comma = null;
    let found = null;
    let start = null;
    for (const token of tokens) {
        if (reqSpace) {
            if (token.type !== 'space' &&
                token.type !== 'newline' &&
                token.type !== 'comma')
                onError(token.offset, 'MISSING_CHAR', 'Tags and anchors must be separated from the next token by white space');
            reqSpace = false;
        }
        if (tab) {
            if (atNewline && token.type !== 'comment' && token.type !== 'newline') {
                onError(tab, 'TAB_AS_INDENT', 'Tabs are not allowed as indentation');
            }
            tab = null;
        }
        switch (token.type) {
            case 'space':
                // At the doc level, tabs at line start may be parsed
                // as leading white space rather than indentation.
                // In a flow collection, only the parser handles indent.
                if (!flow &&
                    (indicator !== 'doc-start' || next?.type !== 'flow-collection') &&
                    token.source.includes('\t')) {
                    tab = token;
                }
                hasSpace = true;
                break;
            case 'comment': {
                if (!hasSpace)
                    onError(token, 'MISSING_CHAR', 'Comments must be separated from other tokens by white space characters');
                const cb = token.source.substring(1) || ' ';
                if (!comment)
                    comment = cb;
                else
                    comment += commentSep + cb;
                commentSep = '';
                atNewline = false;
                break;
            }
            case 'newline':
                if (atNewline) {
                    if (comment)
                        comment += token.source;
                    else
                        spaceBefore = true;
                }
                else
                    commentSep += token.source;
                atNewline = true;
                hasNewline = true;
                if (anchor || tag)
                    newlineAfterProp = token;
                hasSpace = true;
                break;
            case 'anchor':
                if (anchor)
                    onError(token, 'MULTIPLE_ANCHORS', 'A node can have at most one anchor');
                if (token.source.endsWith(':'))
                    onError(token.offset + token.source.length - 1, 'BAD_ALIAS', 'Anchor ending in : is ambiguous', true);
                anchor = token;
                if (start === null)
                    start = token.offset;
                atNewline = false;
                hasSpace = false;
                reqSpace = true;
                break;
            case 'tag': {
                if (tag)
                    onError(token, 'MULTIPLE_TAGS', 'A node can have at most one tag');
                tag = token;
                if (start === null)
                    start = token.offset;
                atNewline = false;
                hasSpace = false;
                reqSpace = true;
                break;
            }
            case indicator:
                // Could here handle preceding comments differently
                if (anchor || tag)
                    onError(token, 'BAD_PROP_ORDER', `Anchors and tags must be after the ${token.source} indicator`);
                if (found)
                    onError(token, 'UNEXPECTED_TOKEN', `Unexpected ${token.source} in ${flow ?? 'collection'}`);
                found = token;
                atNewline =
                    indicator === 'seq-item-ind' || indicator === 'explicit-key-ind';
                hasSpace = false;
                break;
            case 'comma':
                if (flow) {
                    if (comma)
                        onError(token, 'UNEXPECTED_TOKEN', `Unexpected , in ${flow}`);
                    comma = token;
                    atNewline = false;
                    hasSpace = false;
                    break;
                }
            // else fallthrough
            default:
                onError(token, 'UNEXPECTED_TOKEN', `Unexpected ${token.type} token`);
                atNewline = false;
                hasSpace = false;
        }
    }
    const last = tokens[tokens.length - 1];
    const end = last ? last.offset + last.source.length : offset;
    if (reqSpace &&
        next &&
        next.type !== 'space' &&
        next.type !== 'newline' &&
        next.type !== 'comma' &&
        (next.type !== 'scalar' || next.source !== '')) {
        onError(next.offset, 'MISSING_CHAR', 'Tags and anchors must be separated from the next token by white space');
    }
    if (tab &&
        ((atNewline && tab.indent <= parentIndent) ||
            next?.type === 'block-map' ||
            next?.type === 'block-seq'))
        onError(tab, 'TAB_AS_INDENT', 'Tabs are not allowed as indentation');
    return {
        comma,
        found,
        spaceBefore,
        comment,
        hasNewline,
        anchor,
        tag,
        newlineAfterProp,
        end,
        start: start ?? end
    };
}

exports.resolveProps = resolveProps;


code:
import type { Token } from '../parse/cst.js';
export declare function containsNewline(key: Token | null | undefined): boolean | null;


code:
'use strict';

function containsNewline(key) {
    if (!key)
        return null;
    switch (key.type) {
        case 'alias':
        case 'scalar':
        case 'double-quoted-scalar':
        case 'single-quoted-scalar':
            if (key.source.includes('\n'))
                return true;
            if (key.end)
                for (const st of key.end)
                    if (st.type === 'newline')
                        return true;
            return false;
        case 'flow-collection':
            for (const it of key.items) {
                for (const st of it.start)
                    if (st.type === 'newline')
                        return true;
                if (it.sep)
                    for (const st of it.sep)
                        if (st.type === 'newline')
                            return true;
                if (containsNewline(it.key) || containsNewline(it.value))
                    return true;
            }
            return false;
        default:
            return true;
    }
}

exports.containsNewline = containsNewline;