Encountering a TS1005 error while trying to import types from a type definition file

Within my project, one of the libraries called parse5 is providing typing information in .d.ts files. The current syntax used to import types is causing several TypeScript errors during application runtime because TypeScript does not seem to recognize this way of importing types.

By modifying the import syntax to:

import type { CharacterToken, DoctypeToken, TagToken, EOFToken, CommentToken } from '../common/token.js';

I am able to resolve these errors successfully.

Could it be possible that I am using an incorrect tsc version?

typescript

Answer №1

When working with TypeScript version 3.8, it is recommended to use 

import type { SomeThing } from "./some-module.js";
instead of 
import { type SomeThing } from "./some-module.js";

Find out more details here

Answer №2

A new syntax for importing types was recently introduced in the 'parse5' package with Typescript 4.5: https://www.typescriptlang.org/docs/handbook/release-notes/typescript-4-5.html#type-modifiers-on-import-names

Having encountered a similar issue while working on a project with typescript 4.4, I found that simply updating to version 4.5 solved the problem for me.

A quick look at the open issues related to parse5 shows that many others are facing the same challenge, as seen here: https://github.com/inikulin/parse5/issues/913#issuecomment-1520222908

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