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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,3 @@ | ||
| { | ||
| "include": [] | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,108 @@ | ||
| import { fromSource, fromMapFileSource } from "convert-source-map"; | ||
| import { | ||
| createInstrumenter, | ||
| InstrumenterOptions, | ||
| } from "istanbul-lib-instrument"; | ||
| // @ts-expect-error no types | ||
| import mergeSourceMap from "merge-source-map"; | ||
| import { LoaderContext } from "webpack"; | ||
| import fs from "fs"; | ||
| import path from "path"; | ||
| import { AddonOptionsWebpack } from "../types"; | ||
|
|
||
| export type Options = Partial<InstrumenterOptions> & AddonOptionsWebpack; | ||
|
|
||
| type RawSourceMap = { | ||
| version: number; | ||
| sources: string[]; | ||
| mappings: string; | ||
| file?: string; | ||
| sourceRoot?: string; | ||
| sourcesContent?: string[]; | ||
| names?: string[]; | ||
| }; | ||
|
|
||
| export const defaultOptions: Partial<InstrumenterOptions> = { | ||
| preserveComments: true, | ||
| produceSourceMap: true, | ||
| autoWrap: true, | ||
| esModules: true, | ||
| compact: false, | ||
| }; | ||
|
|
||
| export default function ( | ||
| this: LoaderContext<Options>, | ||
| source: string, | ||
| sourceMap?: RawSourceMap | ||
| ) { | ||
| let map = sourceMap; | ||
| let options = Object.assign(defaultOptions, this.getOptions()); | ||
|
|
||
| // If there's no external sourceMap file, then check for an inline sourceMap | ||
| if (!map) { | ||
| map = sourceMap = getInlineSourceMap.call(this, source); | ||
| } | ||
|
|
||
| // Instrument the code | ||
| let instrumenter = createInstrumenter(options); | ||
| instrumenter.instrument( | ||
| source, | ||
| this.resourcePath, | ||
| (error, instrumentedSource) => { | ||
| let instrumentedSourceMap = instrumenter.lastSourceMap(); | ||
|
|
||
| if (sourceMap && instrumentedSourceMap) { | ||
| // Re-map the source map to the original source code | ||
| instrumentedSourceMap = mergeSourceMap( | ||
| sourceMap, | ||
| instrumentedSourceMap | ||
| ); | ||
| } | ||
|
|
||
| this.callback( | ||
| error, | ||
| instrumentedSource, | ||
| instrumentedSourceMap as any as RawSourceMap | ||
| ); | ||
| }, | ||
| sourceMap as any | ||
| ); | ||
| } | ||
|
|
||
| /** | ||
| * If the source code has an inline base64-encoded source map, | ||
| * then this function decodes it, parses it, and returns it. | ||
| */ | ||
| function getInlineSourceMap( | ||
| this: LoaderContext<Options>, | ||
| source: string | ||
| ): RawSourceMap | undefined { | ||
| try { | ||
| // Check for an inline source map | ||
| const inlineSourceMap = | ||
| fromSource(source) || | ||
| fromMapFileSource(source, function (filename) { | ||
| return fs.readFileSync( | ||
| path.resolve(path.dirname(this.resourcePath), filename), | ||
| "utf-8" | ||
| ); | ||
| }); | ||
|
|
||
| if (inlineSourceMap) { | ||
| // Use the inline source map | ||
| return inlineSourceMap.sourcemap as RawSourceMap; | ||
| } | ||
| } catch (e) { | ||
| // Exception is thrown by fromMapFileSource when there is no source map file | ||
| if ( | ||
| e instanceof Error && | ||
| e.message.includes( | ||
| "An error occurred while trying to read the map file at" | ||
| ) | ||
| ) { | ||
| this.emitWarning(e); | ||
| } else { | ||
| throw e; | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,14 @@ | ||
| import { AddonOptionsWebpack } from "./types"; | ||
| // @ts-expect-error no types | ||
| import { loadNycConfig } from "@istanbuljs/load-nyc-config"; | ||
|
|
||
| export async function getNycConfig( | ||
| opts: Pick<AddonOptionsWebpack["istanbul"], "cwd" | "nycrcPath"> = {} | ||
| ) { | ||
| const cwd = opts.cwd ?? process.cwd(); | ||
|
|
||
| return loadNycConfig({ | ||
| cwd, | ||
| nycrcPath: opts.nycrcPath, | ||
| }); | ||
| } |
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