Class MagicString

benchmark/data.js:277–830

	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: guessIndent(string) },
		});
		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) {
		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) {
		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 });
		let originalChunk = this.firstChunk;
		let clonedChunk = (cloned.firstChunk = cloned.lastSearchedChunk = originalChunk.clone());
		while (originalChunk) {
			cloned.byStart[clonedChunk.start] = clonedChunk;
			cloned.byEnd[clonedChunk.end] = clonedChunk;