sindresorhus/eslint-plugin-unicorn

Rule proposal: Require extension for relative imports and re-exports

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#1,194 创建于 2021年4月20日

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help wantednew rule

描述

It would enforce using a .js extension for relative imports if it doesn't already have an extension.

We cannot auto-fix as we cannot know whether import foo from './foo'; refers to a file or directory.

This even applies to TypeScript, where you still need the .js extension even if you import other .ts files.

There's already the import/extensions rule, but that project is not very actively maintained, very buggy, and also it doesn't let us use .js extension for TypeScript files. I think it's worth adding this simple rule here.

This rule will not do anything about require() statements.

Fail

import foo from './foo';

export foo from './foo';

await import('./foo');

Pass

import foo from './foo.js';

export foo from './foo.js';

await import('./foo.js');

import foo from './foo.vue';

贡献者指南

技术栈
javascripttypescript
领域
tooling
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feature
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Understanding of ESLint pluginsJavaScript module systemAST concepts
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
65
研究方向
Review existing rules in the repository (e.g., lib/rules) to understand the pattern for implementing a new rule. Examine the test structure in test/rules. Note that the issue discusses the need for a rule that enforces .js extension for relative imports, similar to import/extensions but with better support for TypeScript. Check the comments for any additional requirements or discussions. There is no linked PR, so implementation can start from scratch.