Wrong path in stack traces with source maps

[gear54rus]

For some reason, the path is mangled. Stack trace for endpoint.js:

2016-01-11 23:11:04.152 [ERROR][E:5de] Failed to initialize: Error: test
    at ../../_src/runtime/endpoint.js:97:13
    at tryCatcher (/usr/share/aps/node/node_modules/bluebird/js/release/util.js:11:23)
    at Promise._settlePromiseFromHandler (/usr/share/aps/node/node_modules/bluebird/js/release/promise.js:489:31)
    at Promise._settlePromise (/usr/share/aps/node/node_modules/bluebird/js/release/promise.js:546:18)
    at Promise._settlePromise0 (/usr/share/aps/node/node_modules/bluebird/js/release/promise.js:591:10)
    at Promise._settlePromises (/usr/share/aps/node/node_modules/bluebird/js/release/promise.js:674:18)
    at Promise._fulfill (/usr/share/aps/node/node_modules/bluebird/js/release/promise.js:615:18)
    at /usr/share/aps/node/node_modules/bluebird/js/release/nodeback.js:42:21
    at tryToString (fs.js:414:3)
    at FSReqWrap.readFileAfterClose [as oncomplete] (fs.js:401:12)

../../_src/runtime/endpoint.js:97:13 is obviously wrong, since no _src directory exists on the installation host. Notice that other paths are OK. Source map in question:

{"version":3,"sources":["../../_src/runtime/endpoint.js"],"names":[],"mappings":"...

Need to research the sourceFileName from these docs.

[gear54rus]

IDK how it works, seriously... Not sure source-map-support even supports relative paths. It seems to just dump whatever's in sources[0] in that trace, even if it's a relative path. Found this.

Also, babel compilation step when building may have to be done separately for each file because no relative directories change the generated path in sources[0]... Send help. 😀