Typescript: requirement appears to be unmet

While compiling my Angular project, I encountered an error related to a package installed via NPM:

node_modules/astrocite-ris/index.d.ts:36:39 - error TS2503: Cannot find namespace 'CSL'.

The package named Astrocite contains a subpackage called astrocite-ris. I have added it to the package.json file as

"astrocite": "^0.16.4",
and imported it into a service using the following code:

import { parse } from 'astrocite-ris';

The error is being shown in the index.d.ts file in VSCode.

Answer №1

It appears that the typings for astrocite-ris are somewhat questionable. While the package is written in TypeScript, the typings are based on a manually written 3-year-old index.d.ts file. If you encounter type errors within packages, you have the option to disable type checking within node_modules by adding "skipLibCheck": false to the compilerOptions in your tsconfig.json (documentation). Alternatively, you can resolve this issue by including

import 'csl-json'

in one of your source files to define the global CSL namespace. It is also recommended to execute npm i -D csl-json to ensure that the package is explicitly included in your dev-dependencies. Ultimately, the resolution of this problem lies with the developer of astrocite-ris, so it may be beneficial to address this matter by opening an issue on https://github.com/dsifford/astrocite.

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