GoScrobble/web/node_modules/sourcemap-codec/dist/sourcemap-codec.umd.js.map

{"version":3,"file":"sourcemap-codec.umd.js","sources":["../src/sourcemap-codec.ts"],"sourcesContent":["export type SourceMapSegment =\n\t| [number]\n\t| [number, number, number, number]\n\t| [number, number, number, number, number];\nexport type SourceMapLine = SourceMapSegment[];\nexport type SourceMapMappings = SourceMapLine[];\n\nconst charToInteger: { [charCode: number]: number } = {};\nconst chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';\n\nfor (let i = 0; i < chars.length; i++) {\n\tcharToInteger[chars.charCodeAt(i)] = i;\n}\n\nexport function decode(mappings: string): SourceMapMappings {\n\tconst decoded: SourceMapMappings = [];\n\tlet line: SourceMapLine = [];\n\tconst segment: SourceMapSegment = [\n\t\t0, // generated code column\n\t\t0, // source file index\n\t\t0, // source code line\n\t\t0, // source code column\n\t\t0, // name index\n\t];\n\n\tlet j = 0;\n\tfor (let i = 0, shift = 0, value = 0; i < mappings.length; i++) {\n\t\tconst c = mappings.charCodeAt(i);\n\n\t\tif (c === 44) { // \",\"\n\t\t\tsegmentify(line, segment, j);\n\t\t\tj = 0;\n\n\t\t} else if (c === 59) { // \";\"\n\t\t\tsegmentify(line, segment, j);\n\t\t\tj = 0;\n\t\t\tdecoded.push(line);\n\t\t\tline = [];\n\t\t\tsegment[0] = 0;\n\n\t\t} else {\n\t\t\tlet integer = charToInteger[c];\n\t\t\tif (integer === undefined) {\n\t\t\t\tthrow new Error('Invalid character (' + String.fromCharCode(c) + ')');\n\t\t\t}\n\n\t\t\tconst hasContinuationBit = integer & 32;\n\n\t\t\tinteger &= 31;\n\t\t\tvalue += integer << shift;\n\n\t\t\tif (hasContinuationBit) {\n\t\t\t\tshift += 5;\n\t\t\t} else {\n\t\t\t\tconst shouldNegate = value & 1;\n\t\t\t\tvalue >>>= 1;\n\n\t\t\t\tif (shouldNegate) {\n\t\t\t\t\tvalue = value === 0 ? -0x80000000 : -value;\n\t\t\t\t}\n\n\t\t\t\tsegment[j] += value;\n\t\t\t\tj++;\n\t\t\t\tvalue = shift = 0; // reset\n\t\t\t}\n\t\t}\n\t}\n\n\tsegmentify(line, segment, j);\n\tdecoded.push(line);\n\n\treturn decoded;\n}\n\nfunction segmentify(line: SourceMapSegment[], segment: SourceMapSegment, j: number) {\n\t// This looks ugly, but we're creating specialized arrays with a specific\n\t// length. This is much faster than creating a new array (which v8 expands to\n\t// a capacity of 17 after pushing the first item), or slicing out a subarray\n\t// (which is slow). Length 4 is assumed to be the most frequent, followed by\n\t// length 5 (since not everything will have an associated name), followed by\n\t// length 1 (it's probably rare for a source substring to not have an\n\t// associated segment data).\n\tif (j === 4) line.push([segment[0], segment[1], segment[2], segment[3]]);\n\telse if (j === 5) line.push([segment[0], segment[1], segment[2], segment[3], segment[4]]);\n\telse if (j === 1) line.push([segment[0]]);\n}\n\nexport function encode(decoded: SourceMapMappings): string {\n\tlet sourceFileIndex = 0;  // second field\n\tlet sourceCodeLine = 0;   // third field\n\tlet sourceCodeColumn = 0; // fourth field\n\tlet nameIndex = 0;        // fifth field\n\tlet mappings = '';\n\n\tfor (let i = 0; i < decoded.length; i++) {\n\t\tconst line = decoded[i];\n\t\tif (i > 0) mappings += ';';\n\t\tif (line.length === 0) continue;\n\n\t\tlet generatedCodeColumn = 0; // first field\n\n\t\tconst lineMappings: string[] = [];\n\n\t\tfor (const segment of line) {\n\t\t\tlet segmentMappings = encodeInteger(segment[0] - generatedCodeColumn);\n\t\t\tgeneratedCodeColumn = segment[0];\n\n\t\t\tif (segment.length > 1) {\n\t\t\t\tsegmentMappings +=\n\t\t\t\t\tencodeInteger(segment[1] - sourceFileIndex) +\n\t\t\t\t\tencodeInteger(segment[2] - sourceCodeLine) +\n\t\t\t\t\tencodeInteger(segment[3] - sourceCodeColumn);\n\n\t\t\t\tsourceFileIndex = segment[1];\n\t\t\t\tsourceCodeLine = segment[2];\n\t\t\t\tsourceCodeColumn = segment[3];\n\t\t\t}\n\n\t\t\tif (segment.length === 5) {\n\t\t\t\tsegmentMappings += encodeInteger(segment[4] - nameIndex);\n\t\t\t\tnameIndex = segment[4];\n\t\t\t}\n\n\t\t\tlineMappings.push(segmentMappings);\n\t\t}\n\n\t\tmappings += lineMappings.join(',');\n\t}\n\n\treturn mappings;\n}\n\nfunction encodeInteger(num: number): string {\n\tvar result = '';\n\tnum = num < 0 ? 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