This package is no longer maintained
Extract the sourcemap from a JS or CSS file
Provide the name of the file you want to extract the sourcemap from, then provide the keys of the sourcemap you want to extract:
extract-sourcemap index.js version
This will output the sourcemap in JSON format:
{"version":3}
Provide the source you want to extract the sourcemap from as a String or Buffer and provide the keys of the sourcemap you want to extract as an array:
let extractSourcemap = require("extract-sourcemap");
let source = "...";
let map = extractSourcemap(source, ["version"]);
You will get back the sourcemap as an Object.
extract-sourcemap is licensed under MPL-2.0 License.