Missing "file" property result source map (gulp-babel-minify)

[egasato]

The pipe crashes when the "file" property is missing in the "result" variable.

To Reproduce
My gulpfile.js serves as an example.

gulp.task("babel:server", function(_done) {
	return gulp.src("lib/*.mjs")
		.pipe(plugins.plumber(function(err) {
			log.error(err);
			this.emit("end");
		}))
		.pipe(plugins.sourcemaps.init())
		.pipe(plugins.babelMinify())
		.pipe(plugins.sourcemaps.write("."))
		.pipe(gulp.dest("build"));
});

Actual Output

I simply run gulp babel:server and this is what happens:

[14:34:36] Using gulpfile /run/media/esau/Shared/Universidad/PTI/Weether/iot-station/gulpfile.js
[14:34:36] Starting 'babel:server'...
/run/media/esau/Shared/Universidad/PTI/Weether/iot-station/node_modules/vinyl-sourcemaps-apply/index.js:37
    throw e;
    ^

Error: Source map to be applied is missing the "file" property
    at assertProperty (/run/media/esau/Shared/Universidad/PTI/Weether/iot-station/node_modules/vinyl-sourcemaps-apply/index.js:36:13)
    at applySourceMap (/run/media/esau/Shared/Universidad/PTI/Weether/iot-station/node_modules/vinyl-sourcemaps-apply/index.js:15:3)
    at DestroyableTransform._transform (/run/media/esau/Shared/Universidad/PTI/Weether/iot-station/node_modules/gulp-babel-minify/lib/index.js:75:9)
    at DestroyableTransform.Transform._read (/run/media/esau/Shared/Universidad/PTI/Weether/iot-station/node_modules/readable-stream/lib/_stream_transform.js:184:10)
    at DestroyableTransform.Transform._write (/run/media/esau/Shared/Universidad/PTI/Weether/iot-station/node_modules/readable-stream/lib/_stream_transform.js:172:83)
    at doWrite (/run/media/esau/Shared/Universidad/PTI/Weether/iot-station/node_modules/readable-stream/lib/_stream_writable.js:428:64)
    at writeOrBuffer (/run/media/esau/Shared/Universidad/PTI/Weether/iot-station/node_modules/readable-stream/lib/_stream_writable.js:417:5)
    at DestroyableTransform.Writable.write (/run/media/esau/Shared/Universidad/PTI/Weether/iot-station/node_modules/readable-stream/lib/_stream_writable.js:334:11)
    at DestroyableTransform.ondata (/run/media/esau/Shared/Universidad/PTI/Weether/iot-station/node_modules/readable-stream/lib/_stream_readable.js:619:20)
    at DestroyableTransform.emit (events.js:182:13)

Expected Output

Adding a simple condition fixing this bug leads to a successful task.

[14:35:55] Using gulpfile /run/media/esau/Shared/Universidad/PTI/Weether/iot-station/gulpfile.js
[14:35:55] Starting 'babel:server'...
[14:35:56] Finished 'babel:server' after 955 ms
[14:35:56] Starting 'babel'...
[14:35:56] Finished 'babel' after 16 μs

Stack Trace

It's in the Actual Output section.

Configuration

How are you using babel-minify?

gulp-babel-minify

babel-minify version: 0.4.3

babel version : 6.26.0

babel-minify-config: the default configuration.

babelrc:

{
  presets: ["env"]
}

Possible solution

Update the applySourceMap call with this code [lines 65-57]:

if (file.sourceMap) {
    if (!result.map.hasOwnProperty("file")) {
        result.map.file = file.sourceMap.file;
    }
    applySourceMap(file, result.map);
}

Additional context

Nothing to add here.

[boopathi]

Closed in #863 ...