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✏️ Editing: magic-string.cjs.js

'use strict';

var sourcemapCodec = require('@jridgewell/sourcemap-codec');

class BitSet {
	constructor(arg) {
		this.bits = arg instanceof BitSet ? arg.bits.slice() : [];
	}

add(n) {
		this.bits[n >> 5] |= 1 << (n & 31);
	}

has(n) {
		return !!(this.bits[n >> 5] & (1 << (n & 31)));
	}
}

class Chunk {
	constructor(start, end, content) {
		this.start = start;
		this.end = end;
		this.original = content;

this.intro = '';
		this.outro = '';

this.content = content;
		this.storeName = false;
		this.edited = false;

{
			this.previous = null;
			this.next = null;
		}
	}

appendLeft(content) {
		this.outro += content;
	}

appendRight(content) {
		this.intro = this.intro + content;
	}

clone() {
		const chunk = new Chunk(this.start, this.end, this.original);

chunk.intro = this.intro;
		chunk.outro = this.outro;
		chunk.content = this.content;
		chunk.storeName = this.storeName;
		chunk.edited = this.edited;

return chunk;
	}

contains(index) {
		return this.start < index && index < this.end;
	}

eachNext(fn) {
		let chunk = this;
		while (chunk) {
			fn(chunk);
			chunk = chunk.next;
		}
	}

eachPrevious(fn) {
		let chunk = this;
		while (chunk) {
			fn(chunk);
			chunk = chunk.previous;
		}
	}

edit(content, storeName, contentOnly) {
		this.content = content;
		if (!contentOnly) {
			this.intro = '';
			this.outro = '';
		}
		this.storeName = storeName;

this.edited = true;

return this;
	}

prependLeft(content) {
		this.outro = content + this.outro;
	}

prependRight(content) {
		this.intro = content + this.intro;
	}

reset() {
		this.intro = '';
		this.outro = '';
		if (this.edited) {
			this.content = this.original;
			this.storeName = false;
			this.edited = false;
		}
	}

split(index) {
		const sliceIndex = index - this.start;

const originalBefore = this.original.slice(0, sliceIndex);
		const originalAfter = this.original.slice(sliceIndex);

this.original = originalBefore;

const newChunk = new Chunk(index, this.end, originalAfter);
		newChunk.outro = this.outro;
		this.outro = '';

this.end = index;

if (this.edited) {
			// after split we should save the edit content record into the correct chunk
			// to make sure sourcemap correct
			// For example:
			// '  test'.trim()
			//     split   -> '  ' + 'test'
			//   ✔️ edit    -> '' + 'test'
			//   ✖️ edit    -> 'test' + ''
			// TODO is this block necessary?...
			newChunk.edit('', false);
			this.content = '';
		} else {
			this.content = originalBefore;
		}

newChunk.next = this.next;
		if (newChunk.next) newChunk.next.previous = newChunk;
		newChunk.previous = this;
		this.next = newChunk;

return newChunk;
	}

toString() {
		return this.intro + this.content + this.outro;
	}

trimEnd(rx) {
		this.outro = this.outro.replace(rx, '');
		if (this.outro.length) return true;

const trimmed = this.content.replace(rx, '');

if (trimmed.length) {
			if (trimmed !== this.content) {
				this.split(this.start + trimmed.length).edit('', undefined, true);
				if (this.edited) {
					// save the change, if it has been edited
					this.edit(trimmed, this.storeName, true);
				}
			}
			return true;
		} else {
			this.edit('', undefined, true);

this.intro = this.intro.replace(rx, '');
			if (this.intro.length) return true;
		}
	}

trimStart(rx) {
		this.intro = this.intro.replace(rx, '');
		if (this.intro.length) return true;

const trimmed = this.content.replace(rx, '');

if (trimmed.length) {
			if (trimmed !== this.content) {
				const newChunk = this.split(this.end - trimmed.length);
				if (this.edited) {
					// save the change, if it has been edited
					newChunk.edit(trimmed, this.storeName, true);
				}
				this.edit('', undefined, true);
			}
			return true;
		} else {
			this.edit('', undefined, true);

this.outro = this.outro.replace(rx, '');
			if (this.outro.length) return true;
		}
	}
}

const btoa = /*#__PURE__*/ getBtoa();

class SourceMap {
	constructor(properties) {
		this.version = 3;
		this.file = properties.file;
		this.sources = properties.sources;
		this.sourcesContent = properties.sourcesContent;
		this.names = properties.names;
		this.mappings = sourcemapCodec.encode(properties.mappings);
		if (typeof properties.x_google_ignoreList !== 'undefined') {
			this.x_google_ignoreList = properties.x_google_ignoreList;
		}
		if (typeof properties.debugId !== 'undefined') {
			this.debugId = properties.debugId;
		}
	}

toString() {
		return JSON.stringify(this);
	}

toUrl() {
		return 'data:application/json;charset=utf-8;base64,' + btoa(this.toString());
	}
}

function guessIndent(code) {
	const lines = code.split('\n');

const tabbed = lines.filter((line) => /^\t+/.test(line));
	const spaced = lines.filter((line) => /^ {2,}/.test(line));

if (tabbed.length === 0 && spaced.length === 0) {
		return null;
	}

// More lines tabbed than spaced? Assume tabs, and
	// default to tabs in the case of a tie (or nothing
	// to go on)
	if (tabbed.length >= spaced.length) {
		return '\t';
	}

// Otherwise, we need to guess the multiple
	const min = spaced.reduce((previous, current) => {
		const numSpaces = /^ +/.exec(current)[0].length;
		return Math.min(numSpaces, previous);
	}, Infinity);

return new Array(min + 1).join(' ');
}

function getRelativePath(from, to) {
	const fromParts = from.split(/[/\\]/);
	const toParts = to.split(/[/\\]/);

fromParts.pop(); // get dirname

while (fromParts[0] === toParts[0]) {
		fromParts.shift();
		toParts.shift();
	}

if (fromParts.length) {
		let i = fromParts.length;
		while (i--) fromParts[i] = '..';
	}

return fromParts.concat(toParts).join('/');
}

const toString = Object.prototype.toString;

function isObject(thing) {
	return toString.call(thing) === '[object Object]';
}

function getLocator(source) {
	const originalLines = source.split('\n');
	const lineOffsets = [];

for (let i = 0, pos = 0; i < originalLines.length; i++) {
		lineOffsets.push(pos);
		pos += originalLines[i].length + 1;
	}

return function locate(index) {
		let i = 0;
		let j = lineOffsets.length;
		while (i < j) {
			const m = (i + j) >> 1;
			if (index < lineOffsets[m]) {
				j = m;
			} else {
				i = m + 1;
			}
		}
		const line = i - 1;
		const column = index - lineOffsets[line];
		return { line, column };
	};
}

const wordRegex = /\w/;

class Mappings {
	constructor(hires) {
		this.hires = hires;
		this.generatedCodeLine = 0;
		this.generatedCodeColumn = 0;
		this.raw = [];
		this.rawSegments = this.raw[this.generatedCodeLine] = [];
		this.pending = null;
	}

addEdit(sourceIndex, content, loc, nameIndex) {
		if (content.length) {
			const contentLengthMinusOne = content.length - 1;
			let contentLineEnd = content.indexOf('\n', 0);
			let previousContentLineEnd = -1;
			// Loop through each line in the content and add a segment, but stop if the last line is empty,
			// else code afterwards would fill one line too many
			while (contentLineEnd >= 0 && contentLengthMinusOne > contentLineEnd) {
				const segment = [this.generatedCodeColumn, sourceIndex, loc.line, loc.column];
				if (nameIndex >= 0) {
					segment.push(nameIndex);
				}
				this.rawSegments.push(segment);

this.generatedCodeLine += 1;
				this.raw[this.generatedCodeLine] = this.rawSegments = [];
				this.generatedCodeColumn = 0;

previousContentLineEnd = contentLineEnd;
				contentLineEnd = content.indexOf('\n', contentLineEnd + 1);
			}

const segment = [this.generatedCodeColumn, sourceIndex, loc.line, loc.column];
			if (nameIndex >= 0) {
				segment.push(nameIndex);
			}
			this.rawSegments.push(segment);

this.advance(content.slice(previousContentLineEnd + 1));
		} else if (this.pending) {
			this.rawSegments.push(this.pending);
			this.advance(content);
		}

this.pending = null;
	}

addUneditedChunk(sourceIndex, chunk, original, loc, sourcemapLocations) {
		let originalCharIndex = chunk.start;
		let first = true;
		// when iterating each char, check if it's in a word boundary
		let charInHiresBoundary = false;

while (originalCharIndex < chunk.end) {
			if (original[originalCharIndex] === '\n') {
				loc.line += 1;
				loc.column = 0;
				this.generatedCodeLine += 1;
				this.raw[this.generatedCodeLine] = this.rawSegments = [];
				this.generatedCodeColumn = 0;
				first = true;
				charInHiresBoundary = false;
			} else {
				if (this.hires || first || sourcemapLocations.has(originalCharIndex)) {
					const segment = [this.generatedCodeColumn, sourceIndex, loc.line, loc.column];

if (this.hires === 'boundary') {
						// in hires "boundary", group segments per word boundary than per char
						if (wordRegex.test(original[originalCharIndex])) {
							// for first char in the boundary found, start the boundary by pushing a segment
							if (!charInHiresBoundary) {
								this.rawSegments.push(segment);
								charInHiresBoundary = true;
							}
						} else {
							// for non-word char, end the boundary by pushing a segment
							this.rawSegments.push(segment);
							charInHiresBoundary = false;
						}
					} else {
						this.rawSegments.push(segment);
					}
				}

loc.column += 1;
				this.generatedCodeColumn += 1;
				first = false;
			}

originalCharIndex += 1;
		}

this.pending = null;
	}

advance(str) {
		if (!str) return;

const lines = str.split('\n');

if (lines.length > 1) {
			for (let i = 0; i < lines.length - 1; i++) {
				this.generatedCodeLine++;
				this.raw[this.generatedCodeLine] = this.rawSegments = [];
			}
			this.generatedCodeColumn = 0;
		}

this.generatedCodeColumn += lines[lines.length - 1].length;
	}
}

const n = '\n';

const warned = {
	insertLeft: false,
	insertRight: false,
	storeName: false,
};

class MagicString {
	constructor(string, options = {}) {
		const chunk = new Chunk(0, string.length, string);

Object.defineProperties(this, {
			original: { writable: true, value: string },
			outro: { writable: true, value: '' },
			intro: { writable: true, value: '' },
			firstChunk: { writable: true, value: chunk },
			lastChunk: { writable: true, value: chunk },
			lastSearchedChunk: { writable: true, value: chunk },
			byStart: { writable: true, value: {} },
			byEnd: { writable: true, value: {} },
			filename: { writable: true, value: options.filename },
			indentExclusionRanges: { writable: true, value: options.indentExclusionRanges },
			sourcemapLocations: { writable: true, value: new BitSet() },
			storedNames: { writable: true, value: {} },
			indentStr: { writable: true, value: undefined },
			ignoreList: { writable: true, value: options.ignoreList },
			offset: { writable: true, value: options.offset || 0 },
		});

this.byStart[0] = chunk;
		this.byEnd[string.length] = chunk;
	}

addSourcemapLocation(char) {
		this.sourcemapLocations.add(char);
	}

append(content) {
		if (typeof content !== 'string') throw new TypeError('outro content must be a string');

this.outro += content;
		return this;
	}

appendLeft(index, content) {
		index = index + this.offset;

if (typeof content !== 'string') throw new TypeError('inserted content must be a string');

this._split(index);

const chunk = this.byEnd[index];

if (chunk) {
			chunk.appendLeft(content);
		} else {
			this.intro += content;
		}
		return this;
	}

appendRight(index, content) {
		index = index + this.offset;

if (typeof content !== 'string') throw new TypeError('inserted content must be a string');

this._split(index);

const chunk = this.byStart[index];

if (chunk) {
			chunk.appendRight(content);
		} else {
			this.outro += content;
		}
		return this;
	}

clone() {
		const cloned = new MagicString(this.original, { filename: this.filename, offset: this.offset });

let originalChunk = this.firstChunk;
		let clonedChunk = (cloned.firstChunk = cloned.lastSearchedChunk = originalChunk.clone());

while (originalChunk) {
			cloned.byStart[clonedChunk.start] = clonedChunk;
			cloned.byEnd[clonedChunk.end] = clonedChunk;

const nextOriginalChunk = originalChunk.next;
			const nextClonedChunk = nextOriginalChunk && nextOriginalChunk.clone();

if (nextClonedChunk) {
				clonedChunk.next = nextClonedChunk;
				nextClonedChunk.previous = clonedChunk;

clonedChunk = nextClonedChunk;
			}

originalChunk = nextOriginalChunk;
		}

cloned.lastChunk = clonedChunk;

if (this.indentExclusionRanges) {
			cloned.indentExclusionRanges = this.indentExclusionRanges.slice();
		}

cloned.sourcemapLocations = new BitSet(this.sourcemapLocations);

cloned.intro = this.intro;
		cloned.outro = this.outro;

return cloned;
	}

generateDecodedMap(options) {
		options = options || {};

const sourceIndex = 0;
		const names = Object.keys(this.storedNames);
		const mappings = new Mappings(options.hires);

const locate = getLocator(this.original);

if (this.intro) {
			mappings.advance(this.intro);
		}

this.firstChunk.eachNext((chunk) => {
			const loc = locate(chunk.start);

if (chunk.intro.length) mappings.advance(chunk.intro);

if (chunk.edited) {
				mappings.addEdit(
					sourceIndex,
					chunk.content,
					loc,
					chunk.storeName ? names.indexOf(chunk.original) : -1,
				);
			} else {
				mappings.addUneditedChunk(sourceIndex, chunk, this.original, loc, this.sourcemapLocations);
			}

if (chunk.outro.length) mappings.advance(chunk.outro);
		});

return {
			file: options.file ? options.file.split(/[/\\]/).pop() : undefined,
			sources: [
				options.source ? getRelativePath(options.file || '', options.source) : options.file || '',
			],
			sourcesContent: options.includeContent ? [this.original] : undefined,
			names,
			mappings: mappings.raw,
			x_google_ignoreList: this.ignoreList ? [sourceIndex] : undefined,
		};
	}

generateMap(options) {
		return new SourceMap(this.generateDecodedMap(options));
	}

_ensureindentStr() {
		if (this.indentStr === undefined) {
			this.indentStr = guessIndent(this.original);
		}
	}

_getRawIndentString() {
		this._ensureindentStr();
		return this.indentStr;
	}

getIndentString() {
		this._ensureindentStr();
		return this.indentStr === null ? '\t' : this.indentStr;
	}

indent(indentStr, options) {
		const pattern = /^[^\r\n]/gm;

if (isObject(indentStr)) {
			options = indentStr;
			indentStr = undefined;
		}

if (indentStr === undefined) {
			this._ensureindentStr();
			indentStr = this.indentStr || '\t';
		}

if (indentStr === '') return this; // noop

options = options || {};

// Process exclusion ranges
		const isExcluded = {};

if (options.exclude) {
			const exclusions =
				typeof options.exclude[0] === 'number' ? [options.exclude] : options.exclude;
			exclusions.forEach((exclusion) => {
				for (let i = exclusion[0]; i < exclusion[1]; i += 1) {
					isExcluded[i] = true;
				}
			});
		}

this.intro = this.intro.replace(pattern, replacer);

let charIndex = 0;
		let chunk = this.firstChunk;

while (chunk) {
			const end = chunk.end;

if (chunk.edited) {
				if (!isExcluded[charIndex]) {
					chunk.content = chunk.content.replace(pattern, replacer);

if (chunk.content.length) {
						shouldIndentNextCharacter = chunk.content[chunk.content.length - 1] === '\n';
					}
				}
			} else {
				charIndex = chunk.start;

while (charIndex < end) {
					if (!isExcluded[charIndex]) {
						const char = this.original[charIndex];

if (char === '\n') {
							shouldIndentNextCharacter = true;
						} else if (char !== '\r' && shouldIndentNextCharacter) {
							shouldIndentNextCharacter = false;

if (charIndex === chunk.start) {
								chunk.prependRight(indentStr);
							} else {
								this._splitChunk(chunk, charIndex);
								chunk = chunk.next;
								chunk.prependRight(indentStr);
							}
						}
					}

charIndex += 1;
				}
			}

charIndex = chunk.end;
			chunk = chunk.next;
		}

this.outro = this.outro.replace(pattern, replacer);

return this;
	}

insert() {
		throw new Error(
			'magicString.insert(...) is deprecated. Use prependRight(...) or appendLeft(...)',
		);
	}

insertLeft(index, content) {
		if (!warned.insertLeft) {
			console.warn(
				'magicString.insertLeft(...) is deprecated. Use magicString.appendLeft(...) instead',
			);
			warned.insertLeft = true;
		}

return this.appendLeft(index, content);
	}

insertRight(index, content) {
		if (!warned.insertRight) {
			console.warn(
				'magicString.insertRight(...) is deprecated. Use magicString.prependRight(...) instead',
			);
			warned.insertRight = true;
		}

return this.prependRight(index, content);
	}

move(start, end, index) {
		start = start + this.offset;
		end = end + this.offset;
		index = index + this.offset;

if (index >= start && index <= end) throw new Error('Cannot move a selection inside itself');

this._split(start);
		this._split(end);
		this._split(index);

const first = this.byStart[start];
		const last = this.byEnd[end];

const oldLeft = first.previous;
		const oldRight = last.next;

const newRight = this.byStart[index];
		if (!newRight && last === this.lastChunk) return this;
		const newLeft = newRight ? newRight.previous : this.lastChunk;

if (oldLeft) oldLeft.next = oldRight;
		if (oldRight) oldRight.previous = oldLeft;

if (newLeft) newLeft.next = first;
		if (newRight) newRight.previous = last;

if (!first.previous) this.firstChunk = last.next;
		if (!last.next) {
			this.lastChunk = first.previous;
			this.lastChunk.next = null;
		}

first.previous = newLeft;
		last.next = newRight || null;

if (!newLeft) this.firstChunk = first;
		if (!newRight) this.lastChunk = last;
		return this;
	}

overwrite(start, end, content, options) {
		options = options || {};
		return this.update(start, end, content, { ...options, overwrite: !options.contentOnly });
	}

update(start, end, content, options) {
		start = start + this.offset;
		end = end + this.offset;

if (typeof content !== 'string') throw new TypeError('replacement content must be a string');

if (this.original.length !== 0) {
			while (start < 0) start += this.original.length;
			while (end < 0) end += this.original.length;
		}

if (end > this.original.length) throw new Error('end is out of bounds');
		if (start === end)
			throw new Error(
				'Cannot overwrite a zero-length range – use appendLeft or prependRight instead',
			);

this._split(start);
		this._split(end);

if (options === true) {
			if (!warned.storeName) {
				console.warn(
					'The final argument to magicString.overwrite(...) should be an options object. See https://github.com/rich-harris/magic-string',
				);
				warned.storeName = true;
			}

options = { storeName: true };
		}
		const storeName = options !== undefined ? options.storeName : false;
		const overwrite = options !== undefined ? options.overwrite : false;

if (storeName) {
			const original = this.original.slice(start, end);
			Object.defineProperty(this.storedNames, original, {
				writable: true,
				value: true,
				enumerable: true,
			});
		}

const first = this.byStart[start];
		const last = this.byEnd[end];

if (first) {
			let chunk = first;
			while (chunk !== last) {
				if (chunk.next !== this.byStart[chunk.end]) {
					throw new Error('Cannot overwrite across a split point');
				}
				chunk = chunk.next;
				chunk.edit('', false);
			}

first.edit(content, storeName, !overwrite);
		} else {
			// must be inserting at the end
			const newChunk = new Chunk(start, end, '').edit(content, storeName);

// TODO last chunk in the array may not be the last chunk, if it's moved...
			last.next = newChunk;
			newChunk.previous = last;
		}
		return this;
	}

prepend(content) {
		if (typeof content !== 'string') throw new TypeError('outro content must be a string');

this.intro = content + this.intro;
		return this;
	}

prependLeft(index, content) {
		index = index + this.offset;

if (typeof content !== 'string') throw new TypeError('inserted content must be a string');

this._split(index);

const chunk = this.byEnd[index];

if (chunk) {
			chunk.prependLeft(content);
		} else {
			this.intro = content + this.intro;
		}
		return this;
	}

prependRight(index, content) {
		index = index + this.offset;

if (typeof content !== 'string') throw new TypeError('inserted content must be a string');

this._split(index);

const chunk = this.byStart[index];

if (chunk) {
			chunk.prependRight(content);
		} else {
			this.outro = content + this.outro;
		}
		return this;
	}

remove(start, end) {
		start = start + this.offset;
		end = end + this.offset;

if (this.original.length !== 0) {
			while (start < 0) start += this.original.length;
			while (end < 0) end += this.original.length;
		}

if (start === end) return this;

if (start < 0 || end > this.original.length) throw new Error('Character is out of bounds');
		if (start > end) throw new Error('end must be greater than start');

this._split(start);
		this._split(end);

let chunk = this.byStart[start];

while (chunk) {
			chunk.intro = '';
			chunk.outro = '';
			chunk.edit('');

chunk = end > chunk.end ? this.byStart[chunk.end] : null;
		}
		return this;
	}

reset(start, end) {
		start = start + this.offset;
		end = end + this.offset;

if (this.original.length !== 0) {
			while (start < 0) start += this.original.length;
			while (end < 0) end += this.original.length;
		}

if (start === end) return this;

if (start < 0 || end > this.original.length) throw new Error('Character is out of bounds');
		if (start > end) throw new Error('end must be greater than start');

this._split(start);
		this._split(end);

let chunk = this.byStart[start];

while (chunk) {
			chunk.reset();

chunk = end > chunk.end ? this.byStart[chunk.end] : null;
		}
		return this;
	}

lastChar() {
		if (this.outro.length) return this.outro[this.outro.length - 1];
		let chunk = this.lastChunk;
		do {
			if (chunk.outro.length) return chunk.outro[chunk.outro.length - 1];
			if (chunk.content.length) return chunk.content[chunk.content.length - 1];
			if (chunk.intro.length) return chunk.intro[chunk.intro.length - 1];
		} while ((chunk = chunk.previous));
		if (this.intro.length) return this.intro[this.intro.length - 1];
		return '';
	}

lastLine() {
		let lineIndex = this.outro.lastIndexOf(n);
		if (lineIndex !== -1) return this.outro.substr(lineIndex + 1);
		let lineStr = this.outro;
		let chunk = this.lastChunk;
		do {
			if (chunk.outro.length > 0) {
				lineIndex = chunk.outro.lastIndexOf(n);
				if (lineIndex !== -1) return chunk.outro.substr(lineIndex + 1) + lineStr;
				lineStr = chunk.outro + lineStr;
			}

if (chunk.content.length > 0) {
				lineIndex = chunk.content.lastIndexOf(n);
				if (lineIndex !== -1) return chunk.content.substr(lineIndex + 1) + lineStr;
				lineStr = chunk.content + lineStr;
			}

if (chunk.intro.length > 0) {
				lineIndex = chunk.intro.lastIndexOf(n);
				if (lineIndex !== -1) return chunk.intro.substr(lineIndex + 1) + lineStr;
				lineStr = chunk.intro + lineStr;
			}
		} while ((chunk = chunk.previous));
		lineIndex = this.intro.lastIndexOf(n);
		if (lineIndex !== -1) return this.intro.substr(lineIndex + 1) + lineStr;
		return this.intro + lineStr;
	}

slice(start = 0, end = this.original.length - this.offset) {
		start = start + this.offset;
		end = end + this.offset;

if (this.original.length !== 0) {
			while (start < 0) start += this.original.length;
			while (end < 0) end += this.original.length;
		}

let result = '';

// find start chunk
		let chunk = this.firstChunk;
		while (chunk && (chunk.start > start || chunk.end <= start)) {
			// found end chunk before start
			if (chunk.start < end && chunk.end >= end) {
				return result;
			}

chunk = chunk.next;
		}

if (chunk && chunk.edited && chunk.start !== start)
			throw new Error(`Cannot use replaced character ${start} as slice start anchor.`);

const startChunk = chunk;
		while (chunk) {
			if (chunk.intro && (startChunk !== chunk || chunk.start === start)) {
				result += chunk.intro;
			}

const containsEnd = chunk.start < end && chunk.end >= end;
			if (containsEnd && chunk.edited && chunk.end !== end)
				throw new Error(`Cannot use replaced character ${end} as slice end anchor.`);

const sliceStart = startChunk === chunk ? start - chunk.start : 0;
			const sliceEnd = containsEnd ? chunk.content.length + end - chunk.end : chunk.content.length;

result += chunk.content.slice(sliceStart, sliceEnd);

if (chunk.outro && (!containsEnd || chunk.end === end)) {
				result += chunk.outro;
			}

if (containsEnd) {
				break;
			}

chunk = chunk.next;
		}

return result;
	}

// TODO deprecate this? not really very useful
	snip(start, end) {
		const clone = this.clone();
		clone.remove(0, start);
		clone.remove(end, clone.original.length);

return clone;
	}

_split(index) {
		if (this.byStart[index] || this.byEnd[index]) return;

let chunk = this.lastSearchedChunk;
		let previousChunk = chunk;
		const searchForward = index > chunk.end;

while (chunk) {
			if (chunk.contains(index)) return this._splitChunk(chunk, index);

chunk = searchForward ? this.byStart[chunk.end] : this.byEnd[chunk.start];

// Prevent infinite loop (e.g. via empty chunks, where start === end)
			if (chunk === previousChunk) return;

previousChunk = chunk;
		}
	}

_splitChunk(chunk, index) {
		if (chunk.edited && chunk.content.length) {
			// zero-length edited chunks are a special case (overlapping replacements)
			const loc = getLocator(this.original)(index);
			throw new Error(
				`Cannot split a chunk that has already been edited (${loc.line}:${loc.column} – "${chunk.original}")`,
			);
		}

const newChunk = chunk.split(index);

this.byEnd[index] = chunk;
		this.byStart[index] = newChunk;
		this.byEnd[newChunk.end] = newChunk;

if (chunk === this.lastChunk) this.lastChunk = newChunk;

this.lastSearchedChunk = chunk;
		return true;
	}

toString() {
		let str = this.intro;

let chunk = this.firstChunk;
		while (chunk) {
			str += chunk.toString();
			chunk = chunk.next;
		}

return str + this.outro;
	}

isEmpty() {
		let chunk = this.firstChunk;
		do {
			if (
				(chunk.intro.length && chunk.intro.trim()) ||
				(chunk.content.length && chunk.content.trim()) ||
				(chunk.outro.length && chunk.outro.trim())
			)
				return false;
		} while ((chunk = chunk.next));
		return true;
	}

length() {
		let chunk = this.firstChunk;
		let length = 0;
		do {
			length += chunk.intro.length + chunk.content.length + chunk.outro.length;
		} while ((chunk = chunk.next));
		return length;
	}

trimLines() {
		return this.trim('[\\r\\n]');
	}

trim(charType) {
		return this.trimStart(charType).trimEnd(charType);
	}

trimEndAborted(charType) {
		const rx = new RegExp((charType || '\\s') + '+$');

this.outro = this.outro.replace(rx, '');
		if (this.outro.length) return true;

let chunk = this.lastChunk;

do {
			const end = chunk.end;
			const aborted = chunk.trimEnd(rx);

// if chunk was trimmed, we have a new lastChunk
			if (chunk.end !== end) {
				if (this.lastChunk === chunk) {
					this.lastChunk = chunk.next;
				}

this.byEnd[chunk.end] = chunk;
				this.byStart[chunk.next.start] = chunk.next;
				this.byEnd[chunk.next.end] = chunk.next;
			}

if (aborted) return true;
			chunk = chunk.previous;
		} while (chunk);

return false;
	}

trimEnd(charType) {
		this.trimEndAborted(charType);
		return this;
	}
	trimStartAborted(charType) {
		const rx = new RegExp('^' + (charType || '\\s') + '+');

this.intro = this.intro.replace(rx, '');
		if (this.intro.length) return true;

let chunk = this.firstChunk;

do {
			const end = chunk.end;
			const aborted = chunk.trimStart(rx);

if (chunk.end !== end) {
				// special case...
				if (chunk === this.lastChunk) this.lastChunk = chunk.next;

this.byEnd[chunk.end] = chunk;
				this.byStart[chunk.next.start] = chunk.next;
				this.byEnd[chunk.next.end] = chunk.next;
			}

if (aborted) return true;
			chunk = chunk.next;
		} while (chunk);

return false;
	}

trimStart(charType) {
		this.trimStartAborted(charType);
		return this;
	}

hasChanged() {
		return this.original !== this.toString();
	}

_replaceRegexp(searchValue, replacement) {
		function getReplacement(match, str) {
			if (typeof replacement === 'string') {
				return replacement.replace(/\$(\$|&|\d+)/g, (_, i) => {
					// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/replace#specifying_a_string_as_a_parameter
					if (i === '$') return '$';
					if (i === '&') return match[0];
					const num = +i;
					if (num < match.length) return match[+i];
					return `$${i}`;
				});
			} else {
				return replacement(...match, match.index, str, match.groups);
			}
		}
		function matchAll(re, str) {
			let match;
			const matches = [];
			while ((match = re.exec(str))) {
				matches.push(match);
			}
			return matches;
		}
		if (searchValue.global) {
			const matches = matchAll(searchValue, this.original);
			matches.forEach((match) => {
				if (match.index != null) {
					const replacement = getReplacement(match, this.original);
					if (replacement !== match[0]) {
						this.overwrite(match.index, match.index + match[0].length, replacement);
					}
				}
			});
		} else {
			const match = this.original.match(searchValue);
			if (match && match.index != null) {
				const replacement = getReplacement(match, this.original);
				if (replacement !== match[0]) {
					this.overwrite(match.index, match.index + match[0].length, replacement);
				}
			}
		}
		return this;
	}

_replaceString(string, replacement) {
		const { original } = this;
		const index = original.indexOf(string);

if (index !== -1) {
			this.overwrite(index, index + string.length, replacement);
		}

return this;
	}

replace(searchValue, replacement) {
		if (typeof searchValue === 'string') {
			return this._replaceString(searchValue, replacement);
		}

return this._replaceRegexp(searchValue, replacement);
	}

_replaceAllString(string, replacement) {
		const { original } = this;
		const stringLength = string.length;
		for (
			let index = original.indexOf(string);
			index !== -1;
			index = original.indexOf(string, index + stringLength)
		) {
			const previous = original.slice(index, index + stringLength);
			if (previous !== replacement) this.overwrite(index, index + stringLength, replacement);
		}

return this;
	}

replaceAll(searchValue, replacement) {
		if (typeof searchValue === 'string') {
			return this._replaceAllString(searchValue, replacement);
		}

if (!searchValue.global) {
			throw new TypeError(
				'MagicString.prototype.replaceAll called with a non-global RegExp argument',
			);
		}

return this._replaceRegexp(searchValue, replacement);
	}
}

const hasOwnProp = Object.prototype.hasOwnProperty;

class Bundle {
	constructor(options = {}) {
		this.intro = options.intro || '';
		this.separator = options.separator !== undefined ? options.separator : '\n';
		this.sources = [];
		this.uniqueSources = [];
		this.uniqueSourceIndexByFilename = {};
	}

addSource(source) {
		if (source instanceof MagicString) {
			return this.addSource({
				content: source,
				filename: source.filename,
				separator: this.separator,
			});
		}

if (!isObject(source) || !source.content) {
			throw new Error(
				'bundle.addSource() takes an object with a `content` property, which should be an instance of MagicString, and an optional `filename`',
			);
		}

['filename', 'ignoreList', 'indentExclusionRanges', 'separator'].forEach((option) => {
			if (!hasOwnProp.call(source, option)) source[option] = source.content[option];
		});

if (source.separator === undefined) {
			// TODO there's a bunch of this sort of thing, needs cleaning up
			source.separator = this.separator;
		}

if (source.filename) {
			if (!hasOwnProp.call(this.uniqueSourceIndexByFilename, source.filename)) {
				this.uniqueSourceIndexByFilename[source.filename] = this.uniqueSources.length;
				this.uniqueSources.push({ filename: source.filename, content: source.content.original });
			} else {
				const uniqueSource = this.uniqueSources[this.uniqueSourceIndexByFilename[source.filename]];
				if (source.content.original !== uniqueSource.content) {
					throw new Error(`Illegal source: same filename (${source.filename}), different contents`);
				}
			}
		}

this.sources.push(source);
		return this;
	}

append(str, options) {
		this.addSource({
			content: new MagicString(str),
			separator: (options && options.separator) || '',
		});

return this;
	}

clone() {
		const bundle = new Bundle({
			intro: this.intro,
			separator: this.separator,
		});

this.sources.forEach((source) => {
			bundle.addSource({
				filename: source.filename,
				content: source.content.clone(),
				separator: source.separator,
			});
		});

return bundle;
	}

generateDecodedMap(options = {}) {
		const names = [];
		let x_google_ignoreList = undefined;
		this.sources.forEach((source) => {
			Object.keys(source.content.storedNames).forEach((name) => {
				if (!~names.indexOf(name)) names.push(name);
			});
		});

const mappings = new Mappings(options.hires);

if (this.intro) {
			mappings.advance(this.intro);
		}

this.sources.forEach((source, i) => {
			if (i > 0) {
				mappings.advance(this.separator);
			}

const sourceIndex = source.filename ? this.uniqueSourceIndexByFilename[source.filename] : -1;
			const magicString = source.content;
			const locate = getLocator(magicString.original);

if (magicString.intro) {
				mappings.advance(magicString.intro);
			}

magicString.firstChunk.eachNext((chunk) => {
				const loc = locate(chunk.start);

if (chunk.intro.length) mappings.advance(chunk.intro);

if (source.filename) {
					if (chunk.edited) {
						mappings.addEdit(
							sourceIndex,
							chunk.content,
							loc,
							chunk.storeName ? names.indexOf(chunk.original) : -1,
						);
					} else {
						mappings.addUneditedChunk(
							sourceIndex,
							chunk,
							magicString.original,
							loc,
							magicString.sourcemapLocations,
						);
					}
				} else {
					mappings.advance(chunk.content);
				}

if (chunk.outro.length) mappings.advance(chunk.outro);
			});

if (magicString.outro) {
				mappings.advance(magicString.outro);
			}

if (source.ignoreList && sourceIndex !== -1) {
				if (x_google_ignoreList === undefined) {
					x_google_ignoreList = [];
				}
				x_google_ignoreList.push(sourceIndex);
			}
		});

return {
			file: options.file ? options.file.split(/[/\\]/).pop() : undefined,
			sources: this.uniqueSources.map((source) => {
				return options.file ? getRelativePath(options.file, source.filename) : source.filename;
			}),
			sourcesContent: this.uniqueSources.map((source) => {
				return options.includeContent ? source.content : null;
			}),
			names,
			mappings: mappings.raw,
			x_google_ignoreList,
		};
	}

generateMap(options) {
		return new SourceMap(this.generateDecodedMap(options));
	}

getIndentString() {
		const indentStringCounts = {};

this.sources.forEach((source) => {
			const indentStr = source.content._getRawIndentString();

if (indentStr === null) return;

if (!indentStringCounts[indentStr]) indentStringCounts[indentStr] = 0;
			indentStringCounts[indentStr] += 1;
		});

return (
			Object.keys(indentStringCounts).sort((a, b) => {
				return indentStringCounts[a] - indentStringCounts[b];
			})[0] || '\t'
		);
	}

indent(indentStr) {
		if (!arguments.length) {
			indentStr = this.getIndentString();
		}

if (indentStr === '') return this; // noop

let trailingNewline = !this.intro || this.intro.slice(-1) === '\n';

this.sources.forEach((source, i) => {
			const separator = source.separator !== undefined ? source.separator : this.separator;
			const indentStart = trailingNewline || (i > 0 && /\r?\n$/.test(separator));

source.content.indent(indentStr, {
				exclude: source.indentExclusionRanges,
				indentStart, //: trailingNewline || /\r?\n$/.test( separator )  //true///\r?\n/.test( separator )
			});

trailingNewline = source.content.lastChar() === '\n';
		});

if (this.intro) {
			this.intro =
				indentStr +
				this.intro.replace(/^[^\n]/gm, (match, index) => {
					return index > 0 ? indentStr + match : match;
				});
		}

return this;
	}

prepend(str) {
		this.intro = str + this.intro;
		return this;
	}

toString() {
		const body = this.sources
			.map((source, i) => {
				const separator = source.separator !== undefined ? source.separator : this.separator;
				const str = (i > 0 ? separator : '') + source.content.toString();

return str;
			})
			.join('');

return this.intro + body;
	}

isEmpty() {
		if (this.intro.length && this.intro.trim()) return false;
		if (this.sources.some((source) => !source.content.isEmpty())) return false;
		return true;
	}

length() {
		return this.sources.reduce(
			(length, source) => length + source.content.length(),
			this.intro.length,
		);
	}

trimLines() {
		return this.trim('[\\r\\n]');
	}

trim(charType) {
		return this.trimStart(charType).trimEnd(charType);
	}

trimStart(charType) {
		const rx = new RegExp('^' + (charType || '\\s') + '+');
		this.intro = this.intro.replace(rx, '');

if (!this.intro) {
			let source;
			let i = 0;

do {
				source = this.sources[i++];
				if (!source) {
					break;
				}
			} while (!source.content.trimStartAborted(charType));
		}

return this;
	}

trimEnd(charType) {
		const rx = new RegExp((charType || '\\s') + '+$');

let source;
		let i = this.sources.length - 1;

do {
			source = this.sources[i--];
			if (!source) {
				this.intro = this.intro.replace(rx, '');
				break;
			}
		} while (!source.content.trimEndAborted(charType));

return this;
	}
}

MagicString.Bundle = Bundle;
MagicString.SourceMap = SourceMap;
MagicString.default = MagicString; // work around TypeScript bug https://github.com/Rich-Harris/magic-string/pull/121

module.exports = MagicString;
//# sourceMappingURL=magic-string.cjs.js.map

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