"Optional chaining cannot appear in left-hand side" Suddenly appeared.

[ohabash]

Which @angular/* package(s) are the source of the bug?

compiler-cli, compiler

Description

Suddenly my app will not build. I know what optional chaining is. and I tried looking for things in my code that were handled wrong but the app is large and I lack context to narrow the search down.

unfortunately i cannot pin point any code or change that has caused this error. The error is very vague and does not point out where in the code to debug. and may have been introduced when we updated ng and typescript all-though that is not confirmed.

exception found during 'ng build'

✔ Compiling with Angular sources in Ivy partial compilation mode.
✖ Generating FESM2020
Optional chaining cannot appear in left-hand side (Note that you need plugins to import files that are not JavaScript)
[!] Error: unfinished hook action(s) on exit:
(node-resolve) resolveId "./cms.base" "/Users/omar/Sites/met-libs-nx/dist/libs/cms/esm2020/lib/shared/services/flamelink.service.mjs"
(node-resolve) resolveId "./db_paths" "/Users/omar/Sites/met-libs-nx/dist/libs/cms/esm2020/lib/shared/services/flamelink.service.mjs"
(node-resolve) resolveId "../shared/services/cms.service" "/Users/omar/Sites/met-libs-nx/dist/libs/cms/esm2020/lib/schema-panel/schema-builder.service.mjs"
(node-resolve) resolveId "../shared/services/flamelink.service" "/Users/omar/Sites/met-libs-nx/dist/libs/cms/esm2020/lib/schema-panel/schema-builder.service.mjs"
(node-resolve) resolveId "../shared/services/db_paths" "/Users/omar/Sites/met-libs-nx/dist/libs/cms/esm2020/lib/schema-panel/schema-builder.service.mjs"
...

Angular CLI: 13.2.4
Node: 14.16.0
Package Manager: npm 6.14.11
OS: darwin x64

Angular: 13.2.3
... animations, common, compiler, compiler-cli, core, forms
... language-service, material, platform-browser
... platform-browser-dynamic, router

Package                         Version
---------------------------------------------------------
@angular-devkit/architect       0.1302.4
@angular-devkit/build-angular   13.2.4
@angular-devkit/core            13.1.3
@angular-devkit/schematics      13.1.3
@angular/cli                    13.2.4
@angular/fire                   7.2.0
@schematics/angular             13.1.3
ng-packagr                      13.2.1
rxjs                            6.6.7
typescript                      4.5.5

anything helps

I am looking for any info that will assist me in debugging this issue. Please help! I will rewrite this question or provide any additional info but at the moment this is all the relevant info I have.

I used vscode regex search to find any ? before an = in the project but i did not find any. Are there tips similar to this that would help me narrow the hunt down?

(?.)[\d\D]+[=].

Do you think this is syntax error or a version number? Anything helps

[alan-agius4]

Not sure what is happening here, although this is likely a rollup/acorn issue.

I suggest that you try to add a breakpoint / logs in the tryParse method.

[alan-agius4]

Closing as I doubt this is causing by the Angular CLI. Please feel free to re-open if you discover otherwise.

[ohabash]

I was able to find a more detailed error. I will post my solution here if you are not able to help.

here is how the talk with rollup is going.

rollup/rollup#3582

[angular-automatic-lock-bot]

This issue has been automatically locked due to inactivity.
Please file a new issue if you are encountering a similar or related problem.

Read more about our automatic conversation locking policy.

_{This action has been performed automatically by a bot.}