FatalDiagnosticError is being thrown by the compiler when removing signal input or Child component is not exported #27045
Description
Command
build, serve
Is this a regression?
- Yes, this behavior used to work in the previous version
The previous version in which this bug was not present was
17.1
Description
The CLI throws the following error when running the provided repro.
[✘ [ERROR] Cannot read properties of null (reading 'errors') [plugin angular-compiler]
node_modules/@angular-devkit/build-angular/src/tools/esbuild/angular/compiler-plugin.js:199:32:
199 │ if (diagnostics.errors?.length) {
╵ ^
at /Users/kyro/Developer/web/angular-projects/next/node_modules/@angular-devkit/build-angular/src/tools/esbuild/angular/compiler-plugin.js:199:33
at async /Users/kyro/Developer/web/angular-projects/next/node_modules/esbuild/lib/main.js:1350:22
at async Promise.all (index 0)
at async requestCallbacks.on-start (/Users/kyro/Developer/web/angular-projects/next/node_modules/esbuild/lib/main.js:1348:5)
at async handleRequest (/Users/kyro/Developer/web/angular-projects/next/node_modules/esbuild/lib/main.js:732:11)
This error came from the "onStart" callback registered here:
node_modules/@angular-devkit/build-angular/src/tools/esbuild/angular/compiler-plugin.js:81:18:
81 │ build.onStart(async () => {
╵ ~~~~~~~
at setup (/Users/kyro/Developer/web/angular-projects/next/node_modules/@angular-devkit/build-angular/src/tools/esbuild/angular/compiler-plugin.js:81:19)
at async handlePlugins
Minimal Reproduction
Repro : https://github.com/jeanmeche/next
The issue doesn't not happen when either
- The
Childcomponent is exported - Signal input is removed.
While there is maybe an issue on the signal implementation part, the CLI probably shouldn't throw the way it does.
Your Environment
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/ △ \ | '_ \ / _` | | | | |/ _` | '__| | | | | | |
/ ___ \| | | | (_| | |_| | | (_| | | | |___| |___ | |
/_/ \_\_| |_|\__, |\__,_|_|\__,_|_| \____|_____|___|
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Angular CLI: 17.1.2
Node: 18.17.0
Package Manager: npm 9.6.7
OS: darwin x64
Angular: 17.1.2
... animations, cli, common, compiler, compiler-cli, core, forms
... platform-browser, platform-browser-dynamic, platform-server
... router, ssr
Package Version
---------------------------------------------------------
@angular-devkit/architect 0.1701.2
@angular-devkit/build-angular 17.1.2
@angular-devkit/core 17.1.2
@angular-devkit/schematics 17.1.2
@schematics/angular 17.1.2
rxjs 7.8.1
typescript 5.3.3
zone.js 0.14.3
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