Include full error messages in React Native build (#15363)

acdlite · web-flow · commit 875d05d5532b · 2019-04-09T16:40:19.000-07:00
The React Native build does not minify error messages in production,
but it still needs to run the error messages transform to compile
`invariant` calls to `ReactError`. To do this, I added a `noMinify`
option to the Babel plugin. I also renamed it from
`minify-error-messages` to the more generic `transform-error-messages`.
diff --git a/scripts/error-codes/README.md b/scripts/error-codes/README.md
@@ -12,6 +12,6 @@ provide a better debugging support in production. Check out the blog post
   can test it by running `yarn build -- --extract-errors`, but you should only
   commit changes to this file when running a release. (The release tool will
   perform this step automatically.)
-- [`minify-error-codes`](https://github.com/facebook/react/blob/master/scripts/error-codes/minify-error-codes)
+- [`transform-error-messages`](https://github.com/facebook/react/blob/master/scripts/error-codes/transform-error-messages)
   is a Babel pass that rewrites error messages to IDs for a production
   (minified) build.
diff --git a/scripts/error-codes/__tests__/__snapshots__/transform-error-messages.js.snap b/scripts/error-codes/__tests__/__snapshots__/transform-error-messages.js.snap
@@ -94,3 +94,14 @@ import invariant from 'shared/invariant';
   }
 })();"
 `;
+
+exports[`error transform should support noMinify option 1`] = `
+"import _ReactError from 'shared/ReactError';
+
+import invariant from 'shared/invariant';
+(function () {
+  if (!condition) {
+    throw _ReactError(\`Do not override existing functions.\`);
+  }
+})();"
+`;
diff --git a/scripts/error-codes/__tests__/transform-error-messages.js b/scripts/error-codes/__tests__/transform-error-messages.js
@@ -8,11 +8,11 @@
 'use strict';
 
 let babel = require('babel-core');
-let devExpressionWithCodes = require('../minify-error-messages');
+let devExpressionWithCodes = require('../transform-error-messages');
 
-function transform(input) {
+function transform(input, options = {}) {
   return babel.transform(input, {
-    plugins: [devExpressionWithCodes],
+    plugins: [[devExpressionWithCodes, options]],
   }).code;
 }
 
@@ -82,4 +82,16 @@ invariant(condition, 'What\\'s up?');
 `)
     ).toMatchSnapshot();
   });
+
+  it('should support noMinify option', () => {
+    expect(
+      transform(
+        `
+import invariant from 'shared/invariant';
+invariant(condition, 'Do not override existing functions.');
+`,
+        {noMinify: true}
+      )
+    ).toMatchSnapshot();
+  });
 });
diff --git a/scripts/error-codes/transform-error-messages.js b/scripts/error-codes/transform-error-messages.js
@@ -19,6 +19,7 @@ module.exports = function(babel) {
     visitor: {
       CallExpression(path, file) {
         const node = path.node;
+        const noMinify = file.opts.noMinify;
         if (path.get('callee').isIdentifier({name: 'invariant'})) {
           // Turns this code:
           //
@@ -66,7 +67,7 @@ module.exports = function(babel) {
           const errorMap = invertObject(existingErrorMap);
 
           let prodErrorId = errorMap[errorMsgLiteral];
-          if (prodErrorId === undefined) {
+          if (prodErrorId === undefined || noMinify) {
             // There is no error code for this message. We use a lint rule to
             // enforce that messages can be minified, so assume this is
             // intentional and exit gracefully.
diff --git a/scripts/jest/preprocessor.js b/scripts/jest/preprocessor.js
@@ -15,7 +15,7 @@ const pathToBabel = path.join(
   'package.json'
 );
 const pathToBabelPluginDevWithCode = require.resolve(
-  '../error-codes/minify-error-messages'
+  '../error-codes/transform-error-messages'
 );
 const pathToBabelPluginWrapWarning = require.resolve(
   '../babel/wrap-warning-with-env-check'
diff --git a/scripts/rollup/build.js b/scripts/rollup/build.js
@@ -113,7 +113,7 @@ function getBabelConfig(updateBabelOptions, bundleType, filename) {
       return Object.assign({}, options, {
         plugins: options.plugins.concat([
           // Minify invariant messages
-          require('../error-codes/minify-error-messages'),
+          require('../error-codes/transform-error-messages'),
           // Wrap warning() calls in a __DEV__ check so they are stripped from production.
           require('../babel/wrap-warning-with-env-check'),
         ]),
@@ -126,6 +126,11 @@ function getBabelConfig(updateBabelOptions, bundleType, filename) {
     case RN_FB_PROFILING:
       return Object.assign({}, options, {
         plugins: options.plugins.concat([
+          [
+            require('../error-codes/transform-error-messages'),
+            // Preserve full error messages in React Native build
+            {noMinify: true},
+          ],
           // Wrap warning() calls in a __DEV__ check so they are stripped from production.
           require('../babel/wrap-warning-with-env-check'),
         ]),
@@ -141,7 +146,7 @@ function getBabelConfig(updateBabelOptions, bundleType, filename) {
           // Use object-assign polyfill in open source
           path.resolve('./scripts/babel/transform-object-assign-require'),
           // Minify invariant messages
-          require('../error-codes/minify-error-messages'),
+          require('../error-codes/transform-error-messages'),
           // Wrap warning() calls in a __DEV__ check so they are stripped from production.
           require('../babel/wrap-warning-with-env-check'),
         ]),
diff --git a/scripts/rollup/results.json b/scripts/rollup/results.json
@@ -578,57 +578,57 @@
       "filename": "ReactNativeRenderer-dev.js",
       "bundleType": "RN_FB_DEV",
       "packageName": "react-native-renderer",
-      "size": 645983,
-      "gzip": 137694
+      "size": 720540,
+      "gzip": 154199
     },
     {
       "filename": "ReactNativeRenderer-prod.js",
       "bundleType": "RN_FB_PROD",
       "packageName": "react-native-renderer",
-      "size": 252030,
-      "gzip": 44064
+      "size": 252865,
+      "gzip": 44240
     },
     {
       "filename": "ReactNativeRenderer-dev.js",
       "bundleType": "RN_OSS_DEV",
       "packageName": "react-native-renderer",
-      "size": 645895,
-      "gzip": 137660
+      "size": 720452,
+      "gzip": 154169
     },
     {
       "filename": "ReactNativeRenderer-prod.js",
       "bundleType": "RN_OSS_PROD",
       "packageName": "react-native-renderer",
-      "size": 252044,
-      "gzip": 44061
+      "size": 252879,
+      "gzip": 44238
     },
     {
       "filename": "ReactFabric-dev.js",
       "bundleType": "RN_FB_DEV",
       "packageName": "react-native-renderer",
-      "size": 634566,
-      "gzip": 134983
+      "size": 709123,
+      "gzip": 151511
     },
     {
       "filename": "ReactFabric-prod.js",
       "bundleType": "RN_FB_PROD",
       "packageName": "react-native-renderer",
-      "size": 245276,
-      "gzip": 42773
+      "size": 246002,
+      "gzip": 42956
     },
     {
       "filename": "ReactFabric-dev.js",
       "bundleType": "RN_OSS_DEV",
       "packageName": "react-native-renderer",
-      "size": 634470,
-      "gzip": 134930
+      "size": 709027,
+      "gzip": 151463
     },
     {
       "filename": "ReactFabric-prod.js",
       "bundleType": "RN_OSS_PROD",
       "packageName": "react-native-renderer",
-      "size": 245282,
-      "gzip": 42767
+      "size": 246008,
+      "gzip": 42950
     },
     {
       "filename": "ReactTestRenderer-dev.js",
@@ -725,15 +725,15 @@
       "filename": "ReactNativeRenderer-profiling.js",
       "bundleType": "RN_OSS_PROFILING",
       "packageName": "react-native-renderer",
-      "size": 258447,
-      "gzip": 45443
+      "size": 259040,
+      "gzip": 45588
     },
     {
       "filename": "ReactFabric-profiling.js",
       "bundleType": "RN_OSS_PROFILING",
       "packageName": "react-native-renderer",
-      "size": 250755,
-      "gzip": 44122
+      "size": 251432,
+      "gzip": 44320
     },
     {
       "filename": "Scheduler-dev.js",
@@ -774,15 +774,15 @@
       "filename": "ReactNativeRenderer-profiling.js",
       "bundleType": "RN_FB_PROFILING",
       "packageName": "react-native-renderer",
-      "size": 258428,
-      "gzip": 45445
+      "size": 259021,
+      "gzip": 45590
     },
     {
       "filename": "ReactFabric-profiling.js",
       "bundleType": "RN_FB_PROFILING",
       "packageName": "react-native-renderer",
-      "size": 250744,
-      "gzip": 44126
+      "size": 251421,
+      "gzip": 44324
     },
     {
       "filename": "react.profiling.min.js",
