babeljs - How do I get Jest to run tests against a rollup+babel build? -


i'm trying set react module tests. i'm using rollup compile everything, works fine. i'm trying introduce testing well.

my directory structure:

dist/   |- index.js src/   |- .babelrc   |- util.js test/   |- .babelrc   |- util.test.js rollup.config.js

so far, good. have .babelrc in src applies source files:

{   "presets": [     ["es2015", { "modules": false }],     ["env", { "modules": false }],     "react"   ],   "plugins": ["external-helpers"] }

and separate 1 jest tests, doesn't have exceptions rollup requires:

{   "presets": ["es2015", "env", "react"] }

unfortunately, error when run tests, complaining first es6 feature run in in source file (syntaxerror: unexpected token export). if remove module exception, test passes, rollup fails.

how babel apply module exceptions rollup, not jest? or there entirely different way should configuring these?

i have managed solution this, don't , love more transparent one.

my test/.babelrc (with no module exceptions) @ root level of project.

in rollup.config.js, have set rollup-plugin-babel ignore babelrc, , given options in src/.babelrc:

babel({   babelrc: false,   presets: [     ['es2015', { modules: false }],     ['env', { modules: false }],     'react',   ],   plugins: ['external-helpers'],   exclude: 'node_modules/**', }),

this seems work, having .babelrc @ root level isn't used in compiling package seems recipe confusion later down line. surely there better way?


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