CODEWITHSUNDEEP
javascriptangulartypescript
Ole
Ole

Reputation: 47088

TS1086: An accessor cannot be declared in an ambient context

When running with Angular, I'm getting thje error TS1086: An accessor cannot be declared in an ambient context. for Javascript getters and setters in this Abstract Typescript class.

This is the source:


  /**
   * The current id key for the EStore instance.
   * @return this.config.idKey;
   */
  get ID_KEY(): string {
    return this.config.idKey
  }
  /**
   * The current guid key for the EStore instance.
   * @return this.config.guidKey;
   */
  get GUID_KEY(): string {
    return this.config.guidKey
  }

This was working fine until the most recent version of Angular. Are we no longer allowed to use getters and setters in Abstract classes?

Upvotes: 3

Views: 21641

Answers (2)

Jerezle
Jerezle

Reputation: 57

I had this a similar problem with google-auth-library.

I'm on Ubuntu and call tsc to transpile my nodejs server from typescript to javascript, but running 'tsc' was throwing the 'TS1086: An accessor cannot be declared in an ambient context' error.

Initially, I tried updating typescript by running npm install typescript@latest from my server directory but was still seeing errors.

I had to update my global version of typescript so 'tsc' could run, but running npm install typescript@latest -g was also throwing errors. I had to remove the tsc link in /usr/bin/.

What I did to fix:

$ cd /usr/bin
$ sudo rm tsc
$ sudo npm install -g typescript@latest

Calling 'tsc' worked without errors after this.

Upvotes: 0

Reactgular
Reactgular

Reputation: 54811

This isn't an Angular error.

TypeScript 3.7 introduced a breaking change for getters and setters in the type definition files.

As mentioned above, TypeScript 3.7 emits get/set accessors in .d.ts files which can cause breaking changes for consumers on older versions of TypeScript like 3.5 and prior. TypeScript 3.6 users will not be impacted, since that version was future-proofed for this feature.

https://www.typescriptlang.org/docs/handbook/release-notes/typescript-3-7.html#class-field-mitigations

You should be using TypeScript 3.6 or higher if you're going to consume type definitions generated with 3.7 or higher.

Upvotes: 19

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