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SourceMaps doesn't work as expected with minify
Describe the bug SourceMaps doesn't work as expected with Minify and works very well when i remove the minify preset
To Reproduce
Minimal code to reproduce the bug this is the sourceMap config
const gulp = require('gulp');
const paths = require('./../lib/paths');
const gulpif = require('gulp-if');
const changed = require('gulp-changed');
const plumber = require('gulp-plumber');
const sourcemaps = require('gulp-sourcemaps');
gulp.task('es6', () => {
const babel = require('gulp-babel');
const config = require('./../lib/config');
const babelConfiguration = require('./../configuration/babel.config');
const scripts = paths.getAppPaths();
return gulp.src([
...scripts.sources,
], { base: scripts.root })
.pipe(gulpif(config.global.sourceMaps, sourcemaps.init()))
.pipe(plumber())
.pipe(changed(scripts.dist, { extension: '.js' }))
.pipe(babel(babelConfiguration))
.pipe(gulpif(config.global.sourceMaps, sourcemaps.write('.')))
.pipe(gulp.dest(scripts.dist));
});
the configuration/babel.config is this
const config = require('./../lib/config');
const babelEnv = require('@babel/preset-env');
const browsersList = require('./browserslist');
const babelSystemJS = require('@babel/plugin-transform-modules-systemjs');
const path = require('path');
const { argv } = require('yargs');
const babelPlugins = [];
if (config.global.jspm) {
babelPlugins.push([babelSystemJS]);
}
const presets = [
[babelEnv, {
// "useBuiltIns": "entry",
// "targets": browsersList,
}],
];
if (argv.production) {
presets.push(['minify', {
builtIns: false,
mangle: {
keepFnName: true,
},
}]);
}
module.exports = {
babelrc: false,
plugins: babelPlugins,
cwd: path.dirname(__dirname),
presets,
moduleIds: false,
comments: false,
};
as you notice i only enabled the minify for production because the sourceMaps doesn't work well when i added minify
Actual Output
in Production i have this with minify

Expected Output
in development i have this without minify

Configuration
i m using babel-minify with babel-preset-minify version ^0.5.0 in babelrc and gulp-sourcemaps: ^2.6.4,