b459f6a0a4
* Add windows to travis * Update * Do not use sh file on windows * Fix whitespace * Unify command * ./ doesn't work on windows * Remove all ./ usages * Run windows test before others * fix: normalize filename when generating sources sources should be URL. * fix: replace normalized path to cwd * chore: add nodePlatform task options * fix: normalize preset-env filename output * chore: replace normalized path to CWD on win32 platform * limit transform-react-source to run on linux and darwin * test: escapeRegExp on testcases * test: add test for babel --filename on windows * test: double babel-node/cli test timeout * chore: workaround windows build does not stop * chore: remove redundant condition * refactor: rename `nodePlatform` to `os`
106 lines
2.6 KiB
JavaScript
106 lines
2.6 KiB
JavaScript
import sourceMap from "source-map";
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/**
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* Build a sourcemap.
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*/
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export default class SourceMap {
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constructor(opts, code) {
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this._cachedMap = null;
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this._code = code;
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this._opts = opts;
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this._rawMappings = [];
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}
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/**
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* Get the sourcemap.
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*/
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get() {
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if (!this._cachedMap) {
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const map = (this._cachedMap = new sourceMap.SourceMapGenerator({
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sourceRoot: this._opts.sourceRoot,
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}));
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const code = this._code;
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if (typeof code === "string") {
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map.setSourceContent(
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this._opts.sourceFileName.replace(/\\/g, "/"),
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code,
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);
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} else if (typeof code === "object") {
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Object.keys(code).forEach(sourceFileName => {
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map.setSourceContent(
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sourceFileName.replace(/\\/g, "/"),
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code[sourceFileName],
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);
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});
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}
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this._rawMappings.forEach(mapping => map.addMapping(mapping), map);
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}
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return this._cachedMap.toJSON();
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}
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getRawMappings() {
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return this._rawMappings.slice();
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}
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/**
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* Mark the current generated position with a source position. May also be passed null line/column
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* values to insert a mapping to nothing.
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*/
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mark(
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generatedLine: number,
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generatedColumn: number,
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line: number,
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column: number,
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identifierName: ?string,
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filename: ?string,
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force?: boolean,
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) {
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// Adding an empty mapping at the start of a generated line just clutters the map.
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if (this._lastGenLine !== generatedLine && line === null) return;
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// If this mapping points to the same source location as the last one, we can ignore it since
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// the previous one covers it.
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if (
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!force &&
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this._lastGenLine === generatedLine &&
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this._lastSourceLine === line &&
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this._lastSourceColumn === column
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) {
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return;
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}
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this._cachedMap = null;
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this._lastGenLine = generatedLine;
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this._lastSourceLine = line;
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this._lastSourceColumn = column;
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// We are deliberately not using the `source-map` library here to allow
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// callers to use these mappings without any overhead
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this._rawMappings.push({
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// undefined to allow for more compact json serialization
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name: identifierName || undefined,
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generated: {
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line: generatedLine,
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column: generatedColumn,
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},
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source:
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line == null
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? undefined
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: (filename || this._opts.sourceFileName).replace(/\\/g, "/"),
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original:
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line == null
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? undefined
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: {
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line: line,
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column: column,
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},
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});
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}
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}
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