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production build failed "Module parse failed" with "export default class" syntax #14769
Description
🐞 Bug report
Command (mark with an x)
- [ ] new
- [x] build
- [ ] serve
- [ ] test
- [ ] e2e
- [ ] generate
- [ ] add
- [ ] update
- [ ] lint
- [ ] xi18n
- [ ] run
- [ ] config
- [ ] help
- [ ] version
- [ ] doc
Is this a regression?
Yes, the previous version in which this bug was not present was: ....build-optimizer: 0.800.1 works fine.
Description
A clear and concise description of the problem...It seems #14585 breaks below syntax
export default class Foo { .. }
after this change, it converts that code to
export default const Foo = { .. }
export default const is not valid syntax. ng build --prod failed with above code in parsing by acorn cause of that syntax.
🔬 Minimal Reproduction
execute ng build --prod with this project
https://github.com/kawamoto/ng-export-default-class
🔥 Exception or Error
ERROR in ./src/app/foo.js 1:15
Module parse failed: Unexpected token (1:15)
You may need an appropriate loader to handle this file type.
> export default const Foo = /*@__PURE__*/ (() => {
| class Foo {
| constructor() {
🌍 Your Environment
Angular CLI: 8.0.2
Node: 11.3.0
OS: darwin x64
Angular: 8.0.0
... animations, common, compiler, compiler-cli, core, forms
... language-service, platform-browser, platform-browser-dynamic
... router
Package Version
-----------------------------------------------------------
@angular-devkit/architect 0.800.2
@angular-devkit/build-angular 0.800.2
@angular-devkit/build-optimizer 0.800.2
@angular-devkit/build-webpack 0.800.2
@angular-devkit/core 8.0.2
@angular-devkit/schematics 8.0.2
@angular/cli 8.0.2
@ngtools/webpack 8.0.2
@schematics/angular 8.0.2
@schematics/update 0.800.2
rxjs 6.4.0
typescript 3.4.5
webpack 4.30.0
Anything else relevant?
Activity
fix(@angular-devkit/build-optimizer): incorrectly augmented ES2015 de…
fix(@angular-devkit/build-optimizer): incorrectly augmented ES2015 de…
sazalihisham88 commentedon Jun 21, 2019
has this fix released?
mgechev commentedon Jun 22, 2019
Not yet. We'll release early next week.
angular-automatic-lock-bot commentedon Sep 9, 2019
This issue has been automatically locked due to inactivity.
Please file a new issue if you are encountering a similar or related problem.
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fix(@angular-devkit/build-optimizer): incorrectly augmented ES2015 de…