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✏️ Editing: magic-string.umd.js

(function (global, factory) {
	typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
	typeof define === 'function' && define.amd ? define(factory) :
	(global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.MagicString = factory());
})(this, (function () { 'use strict';

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;
			}
		}
	}

// src/vlq.ts
	var comma = ",".charCodeAt(0);
	var semicolon = ";".charCodeAt(0);
	var chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
	var intToChar = new Uint8Array(64);
	var charToInt = new Uint8Array(128);
	for (let i = 0; i < chars.length; i++) {
	  const c = chars.charCodeAt(i);
	  intToChar[i] = c;
	  charToInt[c] = i;
	}
	function encodeInteger(builder, num, relative) {
	  let delta = num - relative;
	  delta = delta < 0 ? -delta << 1 | 1 : delta << 1;
	  do {
	    let clamped = delta & 31;
	    delta >>>= 5;
	    if (delta > 0) clamped |= 32;
	    builder.write(intToChar[clamped]);
	  } while (delta > 0);
	  return num;
	}

// src/strings.ts
	var bufLength = 1024 * 16;
	var td = typeof TextDecoder !== "undefined" ? /* @__PURE__ */ new TextDecoder() : typeof Buffer !== "undefined" ? {
	  decode(buf) {
	    const out = Buffer.from(buf.buffer, buf.byteOffset, buf.byteLength);
	    return out.toString();
	  }
	} : {
	  decode(buf) {
	    let out = "";
	    for (let i = 0; i < buf.length; i++) {
	      out += String.fromCharCode(buf[i]);
	    }
	    return out;
	  }
	};
	var StringWriter = class {
	  constructor() {
	    this.pos = 0;
	    this.out = "";
	    this.buffer = new Uint8Array(bufLength);
	  }
	  write(v) {
	    const { buffer } = this;
	    buffer[this.pos++] = v;
	    if (this.pos === bufLength) {
	      this.out += td.decode(buffer);
	      this.pos = 0;
	    }
	  }
	  flush() {
	    const { buffer, out, pos } = this;
	    return pos > 0 ? out + td.decode(buffer.subarray(0, pos)) : out;
	  }
	};
	function encode(decoded) {
	  const writer = new StringWriter();
	  let sourcesIndex = 0;
	  let sourceLine = 0;
	  let sourceColumn = 0;
	  let namesIndex = 0;
	  for (let i = 0; i < decoded.length; i++) {
	    const line = decoded[i];
	    if (i > 0) writer.write(semicolon);
	    if (line.length === 0) continue;
	    let genColumn = 0;
	    for (let j = 0; j < line.length; j++) {
	      const segment = line[j];
	      if (j > 0) writer.write(comma);
	      genColumn = encodeInteger(writer, segment[0], genColumn);
	      if (segment.length === 1) continue;
	      sourcesIndex = encodeInteger(writer, segment[1], sourcesIndex);
	      sourceLine = encodeInteger(writer, segment[2], sourceLine);
	      sourceColumn = encodeInteger(writer, segment[3], sourceColumn);
	      if (segment.length === 4) continue;
	      namesIndex = encodeInteger(writer, segment[4], namesIndex);
	    }
	  }
	  return writer.flush();
	}

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 = 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

return MagicString;

}));
//# sourceMappingURL=magic-string.umd.js.map

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