an ambient enum declarations member initializer must be constant expression about ngx-ui HOT 21 CLOSED

I installed latest typescript version inside project. Not globally.

npm install typescript@next --save

And it's working now

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npm install [email protected] has saved my day

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You need typescript 2.4

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According to this comment Angular isn't compatible with TypeScript 2.4 or 2.5 yet.

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I was stoked to try out this grid because ag-grid is crazy bloated and this looks it has just enough features without the bloat. But I get this error as well with a clean Linux build and fresh install of Angular CLI. Why would an angular grid be built for a version of TS that isn't compatible with Angular? I'll look for another lightweight grid and maybe revisit this one again in the future. :-(

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Hmm, I guess caching problem. Got fixed after I reloaded and restarted everything.

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I am looking at the Angular Changelog here:
https://github.com/angular/angular/blob/master/CHANGELOG.md

Angular 4.3.4 was made available August 10, 2017 and it supports Typescript 2.4.

You probably want to upgrade now to Typescript 2.4. According to the Changelog, Angular 5 requires it.

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Hah. Nope. That's weird.
So when I comment it out, compile, and then uncomment again. It works.
But it keeps giving me these errors.

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Im having this issue and tried to update ts to 2.4.2.
here is my setup.
angular/cdk: 5.0.0-rc0
angular/cli: 1.5.0
angular/flex-layout: 2.0.0-beta.11-b01c2d7
angular/material: 5.0.0-rc0
angular-devkit/build-optimizer: 0.0.33
angular-devkit/core: 0.0.20
angular-devkit/schematics: 0.0.35
ngtools/json-schema: 1.1.0
ngtools/webpack: 1.8.0
schematics/angular: 0.1.3
typescript: 2.4.2
webpack: 3.8.1

Still getting the errors

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npm install [email protected] has saved my day

worked for me

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I can second this issue but I believe it's a TS specific error. In ambient enum declarations member initializer must be constant expression.

Trying to understand what I'm doing wrong based on this: https://github.com/Microsoft/TypeScript/blob/master/tests/baselines/reference/ambientErrors.errors.txt But has anyone got to the bottom of this error?

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no.. but +1

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+1

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@amcdnl I got

• typescript 2.42.
• ng-cli 1.3.0-rc.5

Still the same error.

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Also the release candidate can be used instead of the nightly build. npm install typescript@rc --save

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Please reopen this issue because as @cwalcott mentioned we cannot update TS to 2.4 version now

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@ogix What does it mean?
Which TS. global or for this specific project?

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Local, since this version will be used when bundling using Angular CLI. I get a warning that 2.4 ant later TS is not supported yet and it can cause problems.

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Any solution on this other than updating to 2.4?

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Same problem

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Thanks, wilkinsleung0712. you save me time.

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