67 lines
1.7 KiB
JavaScript
67 lines
1.7 KiB
JavaScript
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#!/usr/bin/env node
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/**
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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* @format
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*/
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'use strict';
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const {composeSourceMaps} = require('metro-source-map');
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const fs = require('fs');
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const argv = process.argv.slice(2);
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let outputPath;
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for (let i = 0; i < argv.length; ) {
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if (argv[i] === '-o') {
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outputPath = argv[i + 1];
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argv.splice(i, 2);
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continue;
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}
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++i;
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}
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if (!argv.length) {
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process.stderr.write(
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'Usage: node compose-source-maps.js <packager_sourcemap> <compiler_sourcemap> [-o output_file]\n',
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);
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process.exitCode = -1;
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} else {
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const [packagerSourcemapPath, compilerSourcemapPath] = argv.splice(0, 2);
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const packagerSourcemap = JSON.parse(
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fs.readFileSync(packagerSourcemapPath, 'utf8'),
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);
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const compilerSourcemap = JSON.parse(
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fs.readFileSync(compilerSourcemapPath, 'utf8'),
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);
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if (
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packagerSourcemap.x_facebook_offsets != null ||
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compilerSourcemap.x_facebook_offsets != null
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) {
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throw new Error(
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'Random Access Bundle (RAM) format is not supported by this tool; ' +
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'it cannot process the `x_facebook_offsets` field provided ' +
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'in the base and/or target source map(s)',
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);
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}
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if (compilerSourcemap.x_facebook_segments != null) {
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throw new Error(
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'This tool cannot process the `x_facebook_segments` field provided ' +
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'in the target source map.',
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);
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}
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const composedMapJSON = JSON.stringify(
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composeSourceMaps([packagerSourcemap, compilerSourcemap]),
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);
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if (outputPath) {
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fs.writeFileSync(outputPath, composedMapJSON, 'utf8');
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} else {
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process.stdout.write();
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}
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}
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