Summary: Tries to adress https://github.com/facebook/metro/issues/65. We need a reasonnable workaround to support modules like `moment.js` that do dynamic requires but only in some cases. By replacing the call by a function that throws, we move the exception at runtime instead of happening at compile time. We don't want to do that for non-node_modules file because they are fixable directly, while `node_modules` are not fixable by people and they get completely blocked by the error at compile time.
Reviewed By: rafeca
Differential Revision: D6736989
fbshipit-source-id: a6e1fd9b56fa83907400884efd8f8594018b7c37
Summary:
Depends on #124.
---
**Summary**
Metro reports errors using a JSON payload that has an `errors` array. Each item in this array has a `description` field. For transform errors, this field was set using the value in `error.description` -- however, JS Error objects only have a `message` field. (Grepping the Metro code, no errors (except in one test) ever get a `description` field.) This commit uses `error.message` instead of `error.description` when creating JSON payloads.
```
$ git grep description -- 'packages/**/*.js'
packages/metro/src/JSTransformer/__tests__/Transformer-test.js: babelError.description = message;
packages/metro/src/lib/formatBundlingError.js: description: string,
packages/metro/src/lib/formatBundlingError.js:): {type: string, message: string, errors: Array<{description: string}>} {
packages/metro/src/lib/formatBundlingError.js: errors: [{description: message}],
packages/metro/src/lib/formatBundlingError.js: description: error.message,
packages/metro/src/node-haste/__tests__/Module-test.js: description: "A require('foo') story",
```
**Test Plan**
Added a unit test to check that the description field is set for transform errors (with the delta bundler).
Also in a test RN app, inspected the error payload that is received by RN when there's a syntax error with HMR turned on and verified that `data.body.errors[0].description` was set.
Closes https://github.com/facebook/metro/pull/125
Differential Revision: D6730671
Pulled By: rafeca
fbshipit-source-id: 58311462db9223d65580d77748203d8ea0ea1ac7
Summary:
**Summary**
With RN 0.52, when there was a redbox due to a syntax error in a source file (with regular, non-delta bundler), the redbox would say just "No message provided". The JSON that Metro sent to RN did not include a "message" field because `JSON.stringify(error)` does not include `message`.
**Test Plan**
Add a syntax error to one of the files in RNTester's JS and load the RNTester app (from RN master). See that the redbox now says there was a transform error with the syntax error's location.
Also tested adding a syntax error with HMR enabled and saw that the error `message` field was set in the payload as expected.
Also added a Jest test to Server-test.js.
Closes https://github.com/facebook/metro/pull/124
Differential Revision: D6728310
Pulled By: rafeca
fbshipit-source-id: 9ee3c113767d8c2849bcaac0cb8a9cfa8f2760a6
Summary:
**Summary**
Metro used to have support for "asset plugins", which allowed developers to specify arbitrary JS modules that could export a function for adding more fields to asset data objects. Some of this functionality was removed in the delta bundler work -- this PR adds it back.
**Test plan**
Made existing unit tests pass and added unit tests to test asset plugin behavior. Also tested E2E in a React Native project by adding `assetPlugin=/path/to/pluginModule` to a JS bundle URL and ensuring that the plugin ran.
Closes https://github.com/facebook/metro/pull/118
Differential Revision: D6711094
Pulled By: rafeca
fbshipit-source-id: f42c54cfd11bac5103194f85083084eef25fa3cd
Summary: This changeset tweaks the prelude so as to avoid overriding `process.env` if it already exists, and add tests to verify this behavior. This is useful when a bundle is loaded in a context that already provides a global `process` somehow, ex. Electron/Node.js. We still do want to override `NODE_ENV` in that case so as to have consistency with constant inlining.
Reviewed By: rafeca
Differential Revision: D6702441
fbshipit-source-id: 69dd9ba2303a43db151cbe1877f01e38d45b05b9
Summary: Next step would be to move the error handling out of this module so that we don't depend on `TModule` at all anymore. Once this is done, the module can be extracted as `metro-resolve`, and we can potentially reuse it for jest, etc.
Reviewed By: davidaurelio
Differential Revision: D6660540
fbshipit-source-id: dd0612bec6b526f9ab52cc2e162b6977e2b1670f
Rafael Oleza
Jean Lauliac
Miguel Jimenez Esun
Peter van der Zee
James Ide
John Knox
Adam Ernst
Maël Nison