https://github.com/jridgewell/typescript-import-type-without-execution

Demonstrates that TypeScript supports importing a type from an impure file without executing it
https://github.com/jridgewell/typescript-import-type-without-execution

Last synced: about 2 months ago
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Demonstrates that TypeScript supports importing a type from an impure file without executing it

• Host: GitHub
• URL: https://github.com/jridgewell/typescript-import-type-without-execution
• Owner: jridgewell
• Created: 2020-07-31T03:39:15.000Z (over 4 years ago)
• Default Branch: master
• Last Pushed: 2021-08-02T22:17:14.000Z (over 3 years ago)
• Last Synced: 2024-10-19T18:31:18.890Z (2 months ago)
• Language: TypeScript
• Size: 4.88 KB
• Stars: 2
• Watchers: 2
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# Importing types without executing executing other module

> Demonstrates that TypeScript supports importing a type from an impure file without executing it.

TypeScript actually supports two forms of type-only importing:

1. `import type { Type } from 'path/file'` syntax

https://www.typescriptlang.org/docs/handbook/release-notes/typescript-3-8.html#type-only-imports-and-exports

```ts

// This will not execute any code from 'path/file'

import type { Foo as Local } from 'path/file';

```

2. `import('path/file').Type` syntax

https://www.typescriptlang.org/docs/handbook/release-notes/typescript-2-9.html#import-types

```ts

// This will not execute any code from 'path/file'

type Local = import('path/file').Foo;

```