Skip to content

Instantly share code, notes, and snippets.

What would you like to do?
Extract source code from source map
#!/usr/bin/env ts-node
import * as fs from 'fs'
import * as path from 'path'
import { promisify } from 'util'
import { SourceMapConsumer } from 'source-map'
const writeFile = promisify(fs.writeFile)
const mapFile = process.argv[2]
if (!mapFile) {
console.error('no input file given')
const mapFileContent = fs.readFileSync(mapFile, 'utf-8')
const outputDir = path.join(__dirname, 'output')
fs.mkdirSync(outputDir, {
recursive: true
new SourceMapConsumer(mapFileContent).then(consumer => {
Promise.all( (source) => {
const content = consumer.sourceContentFor(source)
const outputPath = path.join(outputDir, source)
fs.mkdirSync(path.dirname(outputPath), { recursive: true })
return writeFile(outputPath, content)
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment