@v2awesome/source-map-composer v0.0.2

source-map-composer

merge final sourceMap with intermediate sourceMap, generate new one connect target with origin.

how to use

npm install @v2awesome/source-map-composer

import {composeSourceMap} from 'source-map-composer'

/**
 * composeSourcemap
 * compose sourcemap into one, the sourcemap should be desc sorted passed into function
 *
 * @param {...string[]} paths desc sorted sorucemap'path, last path should be the origin sourcemap, and involed first
 *
 * @returns {(Promise<void | string>)} composed sourcemap
 */
composeSourceMap(paths)

why this packages?

In my case: typescript(origin) -> es6module(intermediate) --rollup--> target (umd). This flow will produce two sourceMap, ts_es6_sourceMap, and es6_target_sourceMap, target's sourceMap will no longer track to the orign source.