source: frontend/node_modules/magic-string/dist/magic-string.es.js

import { encode } from 'sourcemap-codec';

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

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

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

var Chunk = function Chunk(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;

        // we make these non-enumerable, for sanity while debugging
        Object.defineProperties(this, {
                previous: { writable: true, value: null },
                next: { writable: true, value: null },
        });
};

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

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

Chunk.prototype.clone = function clone () {
        var 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;
};

Chunk.prototype.contains = function contains (index) {
        return this.start < index && index < this.end;
};

Chunk.prototype.eachNext = function eachNext (fn) {
        var chunk = this;
        while (chunk) {
                fn(chunk);
                chunk = chunk.next;
        }
};

Chunk.prototype.eachPrevious = function eachPrevious (fn) {
        var chunk = this;
        while (chunk) {
                fn(chunk);
                chunk = chunk.previous;
        }
};

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

        this.edited = true;

        return this;
};

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

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

Chunk.prototype.split = function split (index) {
        var sliceIndex = index - this.start;

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

        this.original = originalBefore;

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

        this.end = index;

        if (this.edited) {
                // 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;
};

Chunk.prototype.toString = function toString () {
        return this.intro + this.content + this.outro;
};

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

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

        if (trimmed.length) {
                if (trimmed !== this.content) {
                        this.split(this.start + trimmed.length).edit('', undefined, true);
                }
                return true;
        } else {
                this.edit('', undefined, true);

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

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

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

        if (trimmed.length) {
                if (trimmed !== this.content) {
                        this.split(this.end - trimmed.length);
                        this.edit('', undefined, true);
                }
                return true;
        } else {
                this.edit('', undefined, true);

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

var btoa = function () {
        throw new Error('Unsupported environment: `window.btoa` or `Buffer` should be supported.');
};
if (typeof window !== 'undefined' && typeof window.btoa === 'function') {
        btoa = function (str) { return window.btoa(unescape(encodeURIComponent(str))); };
} else if (typeof Buffer === 'function') {
        btoa = function (str) { return Buffer.from(str, 'utf-8').toString('base64'); };
}

var SourceMap = function SourceMap(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);
};

SourceMap.prototype.toString = function toString () {
        return JSON.stringify(this);
};

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

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

        var tabbed = lines.filter(function (line) { return /^\t+/.test(line); });
        var spaced = lines.filter(function (line) { return /^ {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
        var min = spaced.reduce(function (previous, current) {
                var numSpaces = /^ +/.exec(current)[0].length;
                return Math.min(numSpaces, previous);
        }, Infinity);

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

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

        fromParts.pop(); // get dirname

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

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

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

var toString = Object.prototype.toString;

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

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

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

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

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

Mappings.prototype.addEdit = function addEdit (sourceIndex, content, loc, nameIndex) {
        if (content.length) {
                var segment = [this.generatedCodeColumn, sourceIndex, loc.line, loc.column];
                if (nameIndex >= 0) {
                        segment.push(nameIndex);
                }
                this.rawSegments.push(segment);
        } else if (this.pending) {
                this.rawSegments.push(this.pending);
        }

        this.advance(content);
        this.pending = null;
};

Mappings.prototype.addUneditedChunk = function addUneditedChunk (sourceIndex, chunk, original, loc, sourcemapLocations) {
        var originalCharIndex = chunk.start;
        var first = true;

        while (originalCharIndex < chunk.end) {
                if (this.hires || first || sourcemapLocations.has(originalCharIndex)) {
                        this.rawSegments.push([this.generatedCodeColumn, sourceIndex, loc.line, loc.column]);
                }

                if (original[originalCharIndex] === '\n') {
                        loc.line += 1;
                        loc.column = 0;
                        this.generatedCodeLine += 1;
                        this.raw[this.generatedCodeLine] = this.rawSegments = [];
                        this.generatedCodeColumn = 0;
                        first = true;
                } else {
                        loc.column += 1;
                        this.generatedCodeColumn += 1;
                        first = false;
                }

                originalCharIndex += 1;
        }

        this.pending = null;
};

Mappings.prototype.advance = function advance (str) {
        if (!str) { return; }

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

        if (lines.length > 1) {
                for (var 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;
};

var n = '\n';

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

var MagicString = function MagicString(string, options) {
        if ( options === void 0 ) options = {};

        var 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;
};

MagicString.prototype.addSourcemapLocation = function addSourcemapLocation (char) {
        this.sourcemapLocations.add(char);
};

MagicString.prototype.append = function append (content) {
        if (typeof content !== 'string') { throw new TypeError('outro content must be a string'); }

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

MagicString.prototype.appendLeft = function appendLeft (index, content) {
        if (typeof content !== 'string') { throw new TypeError('inserted content must be a string'); }

        this._split(index);

        var chunk = this.byEnd[index];

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

MagicString.prototype.appendRight = function appendRight (index, content) {
        if (typeof content !== 'string') { throw new TypeError('inserted content must be a string'); }

        this._split(index);

        var chunk = this.byStart[index];

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

MagicString.prototype.clone = function clone () {
        var cloned = new MagicString(this.original, { filename: this.filename });

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

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

                var nextOriginalChunk = originalChunk.next;
                var 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;
};

MagicString.prototype.generateDecodedMap = function generateDecodedMap (options) {
                var this$1$1 = this;

        options = options || {};

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

        var locate = getLocator(this.original);

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

        this.firstChunk.eachNext(function (chunk) {
                var 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$1$1.original, loc, this$1$1.sourcemapLocations);
                }

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

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

MagicString.prototype.generateMap = function generateMap (options) {
        return new SourceMap(this.generateDecodedMap(options));
};

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

MagicString.prototype.indent = function indent (indentStr, options) {
        var pattern = /^[^\r\n]/gm;

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

        indentStr = indentStr !== undefined ? indentStr : this.indentStr || '\t';

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

        options = options || {};

        // Process exclusion ranges
        var isExcluded = {};

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

        var shouldIndentNextCharacter = options.indentStart !== false;
        var replacer = function (match) {
                if (shouldIndentNextCharacter) { return ("" + indentStr + match); }
                shouldIndentNextCharacter = true;
                return match;
        };

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

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

        while (chunk) {
                var 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]) {
                                        var 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;
};

MagicString.prototype.insert = function insert () {
        throw new Error(
                'magicString.insert(...) is deprecated. Use prependRight(...) or appendLeft(...)'
        );
};

MagicString.prototype.insertLeft = function insertLeft (index, content) {
        if (!warned.insertLeft) {
                console.warn(
                        'magicString.insertLeft(...) is deprecated. Use magicString.appendLeft(...) instead'
                ); // eslint-disable-line no-console
                warned.insertLeft = true;
        }

        return this.appendLeft(index, content);
};

MagicString.prototype.insertRight = function insertRight (index, content) {
        if (!warned.insertRight) {
                console.warn(
                        'magicString.insertRight(...) is deprecated. Use magicString.prependRight(...) instead'
                ); // eslint-disable-line no-console
                warned.insertRight = true;
        }

        return this.prependRight(index, content);
};

MagicString.prototype.move = function move (start, end, index) {
        if (index >= start && index <= end) { throw new Error('Cannot move a selection inside itself'); }

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

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

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

        var newRight = this.byStart[index];
        if (!newRight && last === this.lastChunk) { return this; }
        var 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;
};

MagicString.prototype.overwrite = function overwrite (start, end, content, options) {
        if (typeof content !== 'string') { throw new TypeError('replacement content must be a string'); }

        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'
                        ); // eslint-disable-line no-console
                        warned.storeName = true;
                }

                options = { storeName: true };
        }
        var storeName = options !== undefined ? options.storeName : false;
        var contentOnly = options !== undefined ? options.contentOnly : false;

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

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

        if (first) {
                var 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, contentOnly);
        } else {
                // must be inserting at the end
                var 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;
};

MagicString.prototype.prepend = function prepend (content) {
        if (typeof content !== 'string') { throw new TypeError('outro content must be a string'); }

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

MagicString.prototype.prependLeft = function prependLeft (index, content) {
        if (typeof content !== 'string') { throw new TypeError('inserted content must be a string'); }

        this._split(index);

        var chunk = this.byEnd[index];

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

MagicString.prototype.prependRight = function prependRight (index, content) {
        if (typeof content !== 'string') { throw new TypeError('inserted content must be a string'); }

        this._split(index);

        var chunk = this.byStart[index];

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

MagicString.prototype.remove = function remove (start, end) {
        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);

        var chunk = this.byStart[start];

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

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

MagicString.prototype.lastChar = function lastChar () {
        if (this.outro.length) { return this.outro[this.outro.length - 1]; }
        var 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 '';
};

MagicString.prototype.lastLine = function lastLine () {
        var lineIndex = this.outro.lastIndexOf(n);
        if (lineIndex !== -1) { return this.outro.substr(lineIndex + 1); }
        var lineStr = this.outro;
        var 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;
};

MagicString.prototype.slice = function slice (start, end) {
                if ( start === void 0 ) start = 0;
                if ( end === void 0 ) end = this.original.length;

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

        var result = '';

        // find start chunk
        var 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.")); }

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

                var 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.")); }

                var sliceStart = startChunk === chunk ? start - chunk.start : 0;
                var 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
MagicString.prototype.snip = function snip (start, end) {
        var clone = this.clone();
        clone.remove(0, start);
        clone.remove(end, clone.original.length);

        return clone;
};

MagicString.prototype._split = function _split (index) {
        if (this.byStart[index] || this.byEnd[index]) { return; }

        var chunk = this.lastSearchedChunk;
        var 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];
        }
};

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

        var 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;
};

MagicString.prototype.toString = function toString () {
        var str = this.intro;

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

        return str + this.outro;
};

MagicString.prototype.isEmpty = function isEmpty () {
        var 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;
};

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

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

MagicString.prototype.trim = function trim (charType) {
        return this.trimStart(charType).trimEnd(charType);
};

MagicString.prototype.trimEndAborted = function trimEndAborted (charType) {
        var rx = new RegExp((charType || '\\s') + '+$');

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

        var chunk = this.lastChunk;

        do {
                var end = chunk.end;
                var 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;
};

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

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

        var chunk = this.firstChunk;

        do {
                var end = chunk.end;
                var 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;
};

MagicString.prototype.trimStart = function trimStart (charType) {
        this.trimStartAborted(charType);
        return this;
};

var hasOwnProp = Object.prototype.hasOwnProperty;

var Bundle = function Bundle(options) {
        if ( options === void 0 ) options = {};

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

Bundle.prototype.addSource = function 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', 'indentExclusionRanges', 'separator'].forEach(function (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 {
                        var 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;
};

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

        return this;
};

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

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

        return bundle;
};

Bundle.prototype.generateDecodedMap = function generateDecodedMap (options) {
                var this$1$1 = this;
                if ( options === void 0 ) options = {};

        var names = [];
        this.sources.forEach(function (source) {
                Object.keys(source.content.storedNames).forEach(function (name) {
                        if (!~names.indexOf(name)) { names.push(name); }
                });
        });

        var mappings = new Mappings(options.hires);

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

        this.sources.forEach(function (source, i) {
                if (i > 0) {
                        mappings.advance(this$1$1.separator);
                }

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

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

                magicString.firstChunk.eachNext(function (chunk) {
                        var 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);
                }
        });

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

Bundle.prototype.generateMap = function generateMap (options) {
        return new SourceMap(this.generateDecodedMap(options));
};

Bundle.prototype.getIndentString = function getIndentString () {
        var indentStringCounts = {};

        this.sources.forEach(function (source) {
                var indentStr = source.content.indentStr;

                if (indentStr === null) { return; }

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

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

Bundle.prototype.indent = function indent (indentStr) {
                var this$1$1 = this;

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

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

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

        this.sources.forEach(function (source, i) {
                var separator = source.separator !== undefined ? source.separator : this$1$1.separator;
                var indentStart = trailingNewline || (i > 0 && /\r?\n$/.test(separator));

                source.content.indent(indentStr, {
                        exclude: source.indentExclusionRanges,
                        indentStart: 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, function (match, index) {
                                return index > 0 ? indentStr + match : match;
                        });
        }

        return this;
};

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

Bundle.prototype.toString = function toString () {
                var this$1$1 = this;

        var body = this.sources
                .map(function (source, i) {
                        var separator = source.separator !== undefined ? source.separator : this$1$1.separator;
                        var str = (i > 0 ? separator : '') + source.content.toString();

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

        return this.intro + body;
};

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

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

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

Bundle.prototype.trim = function trim (charType) {
        return this.trimStart(charType).trimEnd(charType);
};

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

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

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

        return this;
};

Bundle.prototype.trimEnd = function trimEnd (charType) {
        var rx = new RegExp((charType || '\\s') + '+$');

        var source;
        var 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;
};

export { Bundle, SourceMap, MagicString as default };
//# sourceMappingURL=magic-string.es.js.map