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{"version":3,"file":"gen-mapping.mjs","sources":["../../src/gen-mapping.ts"],"sourcesContent":["import { SetArray, put } from '@jridgewell/set-array';\nimport { encode } from '@jridgewell/sourcemap-codec';\n\nimport type { SourceMapSegment } from './sourcemap-segment';\nimport type { DecodedSourceMap, EncodedSourceMap, Pos, Mapping } from './types';\n\nexport type { DecodedSourceMap, EncodedSourceMap, Mapping };\n\nexport type Options = {\n file?: string | null;\n sourceRoot?: string | null;\n};\n\n/**\n * A low-level API to associate a generated position with an original source position. Line and\n * column here are 0-based, unlike `addMapping`.\n */\nexport let addSegment: {\n (\n map: GenMapping,\n genLine: number,\n genColumn: number,\n source?: null,\n sourceLine?: null,\n sourceColumn?: null,\n name?: null,\n ): void;\n (\n map: GenMapping,\n genLine: number,\n genColumn: number,\n source: string,\n sourceLine: number,\n sourceColumn: number,\n name?: null,\n ): void;\n (\n map: GenMapping,\n genLine: number,\n genColumn: number,\n source: string,\n sourceLine: number,\n sourceColumn: number,\n name: string,\n ): void;\n};\n\n/**\n * A high-level API to associate a generated position with an original source position. Line is\n * 1-based, but column is 0-based, due to legacy behavior in `source-map` library.\n */\nexport let addMapping: {\n (\n map: GenMapping,\n mapping: {\n generated: Pos;\n source?: null;\n original?: null;\n name?: null;\n },\n ): void;\n (\n map: GenMapping,\n mapping: {\n generated: Pos;\n source: string;\n original: Pos;\n name?: null;\n },\n ): void;\n (\n map: GenMapping,\n mapping: {\n generated: Pos;\n source: string;\n original: Pos;\n name: string;\n },\n ): void;\n};\n\n/**\n * Adds/removes the content of the source file to the source map.\n */\nexport let setSourceContent: (map: GenMapping, source: string, content: string | null) => void;\n\n/**\n * Returns a sourcemap object (with decoded mappings) suitable for passing to a library that expects\n * a sourcemap, or to JSON.stringify.\n */\nexport let decodedMap: (map: GenMapping) => DecodedSourceMap;\n\n/**\n * Returns a sourcemap object (with encoded mappings) suitable for passing to a library that expects\n * a sourcemap, or to JSON.stringify.\n */\nexport let encodedMap: (map: GenMapping) => EncodedSourceMap;\n\n/**\n * Returns an array of high-level mapping objects for every recorded segment, which could then be\n * passed to the `source-map` library.\n */\nexport let allMappings: (map: GenMapping) => Mapping[];\n\n/**\n * Provides the state to generate a sourcemap.\n */\nexport class GenMapping {\n private _names = new SetArray();\n private _sources = new SetArray();\n private _sourcesContent: (string | null)[] = [];\n private _mappings: SourceMapSegment[][] = [];\n declare file: string | null | undefined;\n declare sourceRoot: string | null | undefined;\n\n constructor({ file, sourceRoot }: Options = {}) {\n this.file = file;\n this.sourceRoot = sourceRoot;\n }\n\n static {\n addSegment = (map, genLine, genColumn, source, sourceLine, sourceColumn, name) => {\n const {\n _mappings: mappings,\n _sources: sources,\n _sourcesContent: sourcesContent,\n _names: names,\n } = map;\n\n const line = getLine(mappings, genLine);\n if (source == null) {\n const seg: SourceMapSegment = [genColumn];\n const index = getColumnIndex(line, genColumn, seg);\n return insert(line, index, seg);\n }\n\n // Sigh, TypeScript can't figure out sourceLine and sourceColumn aren't nullish if source\n // isn't nullish.\n assert<number>(sourceLine);\n assert<number>(sourceColumn);\n const sourcesIndex = put(sources, source);\n const seg: SourceMapSegment = name\n ? [genColumn, sourcesIndex, sourceLine, sourceColumn, put(names, name)]\n : [genColumn, sourcesIndex, sourceLine, sourceColumn];\n\n const index = getColumnIndex(line, genColumn, seg);\n if (sourcesIndex === sourcesContent.length) sourcesContent[sourcesIndex] = null;\n insert(line, index, seg);\n };\n\n addMapping = (map, mapping) => {\n const { generated, source, original, name } = mapping;\n return (addSegment as any)(\n map,\n generated.line - 1,\n generated.column,\n source,\n original == null ? undefined : original.line - 1,\n original?.column,\n name,\n );\n };\n\n setSourceContent = (map, source, content) => {\n const { _sources: sources, _sourcesContent: sourcesContent } = map;\n sourcesContent[put(sources, source)] = content;\n };\n\n decodedMap = (map) => {\n const {\n file,\n sourceRoot,\n _mappings: mappings,\n _sources: sources,\n _sourcesContent: sourcesContent,\n _names: names,\n } = map;\n\n return {\n version: 3,\n file,\n names: names.array,\n sourceRoot: sourceRoot || undefined,\n sources: sources.array,\n sourcesContent,\n mappings,\n };\n };\n\n encodedMap = (map) => {\n const decoded = decodedMap(map);\n return {\n ...decoded,\n mappings: encode(decoded.mappings as SourceMapSegment[][]),\n };\n };\n\n allMappings = (map) => {\n const out: Mapping[] = [];\n const { _mappings: mappings, _sources: sources, _names: names } = map;\n\n for (let i = 0; i < mappings.length; i++) {\n const line = mappings[i];\n for (let j = 0; j < line.length; j++) {\n const seg = line[j];\n\n const generated = { line: i + 1, column: seg[0] };\n let source: string | undefined = undefined;\n let original: Pos | undefined = undefined;\n let name: string | undefined = undefined;\n\n if (seg.length !== 1) {\n source = sources.array[seg[1]];\n original = { line: seg[2] + 1, column: seg[3] };\n\n if (seg.length === 5) name = names.array[seg[4]];\n }\n\n out.push({ generated, source, original, name } as Mapping);\n }\n }\n\n return out;\n };\n }\n}\n\nfunction assert<T>(_val: 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