Build failed with deleteOutputPath: false option in config

[kostyahoriainov]

🐞 Bug report

Command (mark with an x)

• new
• build
• serve
• test
• e2e
• generate
• add
• update
• lint
• extract-i18n
• run
• config
• help
• version
• doc

Is this a regression?

Yes, the previous version in which this bug was not present was: 11.2.14

Description

Build failes, if add deleteOutputPath: false in build options.

Seems like it might happend after update to webpack 5, cuz on angular v11 (with wepback 4) everything was fine.

ng build

√ Browser application bundle generation complete.
An unhandled exception occurred: Could not find asset for file: main.bbac280f1a66c93defc1.js
See "C:\Users\admin\AppData\Local\Temp\ng-jbrLjq\angular-errors.log" for further details.

🔬 Minimal Reproduction

Create a new project via ng new, add deleteOutputPath: false param in build options, and run ng build several times. After first build everything is fine, but if to run it again with no code changes, error occurred and build failes.

🔥 Exception or Error

√ Browser application bundle generation complete.
An unhandled exception occurred: Could not find asset for file: main.bbac280f1a66c93defc1.js
See "C:\Users\admin\AppData\Local\Temp\ng-jbrLjq\angular-errors.log" for further details.

🌍 Your Environment

     _                      _                 ____ _     ___
    / \   _ __   __ _ _   _| | __ _ _ __     / ___| |   |_ _|
   / △ \ | '_ \ / _` | | | | |/ _` | '__|   | |   | |    | |
  / ___ \| | | | (_| | |_| | | (_| | |      | |___| |___ | |
 /_/   \_\_| |_|\__, |\__,_|_|\__,_|_|       \____|_____|___|
                |___/
    

Angular CLI: 12.0.3
Node: 14.17.0
Package Manager: npm 6.14.13
OS: win32 x64

Angular: 12.0.3
... animations, cli, common, compiler, compiler-cli, core, forms
... platform-browser, platform-browser-dynamic, router

Package                         Version
---------------------------------------------------------
@angular-devkit/architect       0.1200.3
@angular-devkit/build-angular   12.0.3
@angular-devkit/core            12.0.3
@angular-devkit/schematics      12.0.3
@schematics/angular             12.0.3
rxjs                            6.6.7
typescript                      4.2.4

Anything else relevant?

[alan-agius4]

Duplicate of #21038

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