npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

eslint-plugin-export-scope

v2.4.0

Published

Don't leak LOCAL utils, states, components into the global scope

Downloads

21,073

Readme

eslint-plugin-export-scope

Don't leak LOCAL utils, states, contexts, components into the global scope.

Basics

Demo

Demo

Scopes

| scope | importable from | | | --------------- | --------------------------------------- | ----------------------------- | | . | current directory and children | default for all exports | | .. | parent directory and children | default for index files | | ../.. | two directories above and children | | | src/consumer | within specified directory and children | | | src/consumer.ts | within specified file | | | * | anywhere | |

Scoped Exports

/** @scopeDefault ../.. */
/** ☝ Applies to all exports in the file unless overriden with a local `@scope` */

/** @scope * */
export const helper1 = ""; // 👈 Available everywhere

export const helper2 = ""; // 👈 inherits scope `../..` from `@scopeDefault`

/** @scope src/components */
export default "";

Default folder scope with .scope.ts files

└── src
  └── `common`
    ├── utils.ts
    ├── context.ts
    └── `.scope.ts`
             │
             │
  ╭────────────────────╮
  │ export default '*' │
  ╰────────────────────╯
// ⬆ this will make all exports within `common`
// importable from anywhere unless a
// specific export is overriden on a lower level

Exceptions

Export scope exceptions

// schema.ts
/**
 * @scope ..
 * @scopeException src/schemaConsumer 👈 whole folder has access
 * @scopeException src/schemaConsumer/index.ts 👈 whole file has access
 */
export default "";

Folder scope exceptions in .scope.ts files

└── src
  └── `generated`
    ├── schema.ts
    └── `.scope.ts`
             │
             │
  ╭──────────────────────────────────╮
  │ export default '.';              │
  │                                  │
  │ export const exceptions = [      │
  │   'src/schemaConsumer',          │
  │   'src/scripts/schemaParser.ts', │
  │ ]                                │
  ╰──────────────────────────────────╯
// ⬆ by default exports are only importable
// within `generated` folder, but
// folders/files in `exceptions` are exempt.

Installation

Install ESLint and the export-scope package. This package includes both an ESLint plugin and a TS Language Server plugin.

ESLint plugin will highlight imports outside the scope

npm i -D eslint typescript-eslint eslint-plugin-export-scope
// package.json

{
  "type": "module"
}
// eslint.config.js

// @ts-check

import tseslint from "typescript-eslint";
import exportScope from "eslint-plugin-export-scope";

export default tseslint.config(
  // other configs,
  exportScope.configs.flatConfigRecommended,
);
// eslint.config.js

// @ts-check

import tseslint from "typescript-eslint";
import exportScope from "eslint-plugin-export-scope";

export default tseslint.config(
  // other configs,
  {
    files: ["**/*.ts", "**/*.tsx", "**/*.js", "**/*.jsx", "**/*.mts", "**/*.mjs", "**/*.cjs"],
    plugins: { "export-scope": exportScope.plugin },
    rules: { "export-scope/no-imports-outside-export-scope": "error" },
    languageOptions: { parser: tseslint.parser, parserOptions: { project: true } },
  },
);
npm i -D eslint @typescript-eslint/parser eslint-plugin-export-scope
                    # ⬆ v6 or above
// .eslintrc.js
module.exports = {
  // ...
  extends: ["plugin:eslint-plugin-export-scope/recommended"],
  parser: "@typescript-eslint/parser",
  parserOptions: { project: true, tsconfigRootDir: __dirname },
  ignorePatterns: ["!.scope.ts"],
};
// .eslintrc.js
module.exports = {
  // ...
  parser: "@typescript-eslint/parser",
  parserOptions: { project: true, tsconfigRootDir: __dirname },
  plugins: ["export-scope"],
  rules: { "export-scope/no-imports-outside-export-scope": "error" },
  ignorePatterns: ["!.scope.ts"],
};

TS plugin will disable autocompletion for exports outside the scope

// tsconfig.json
"compilerOptions": {
  "plugins": [{ "name": "eslint-plugin-export-scope" }],
},
"include": ["**/*", "**/.scope.ts"]
//                  "../../**/.scope.ts" for monorepos

Tell VSCode to Use Workspace Version of TypeScript. Otherwise TS plugin won't work.

  • tsconfig.json file is still required for the plugin to work
  • replace .scope.ts in both configs with .scope.js
  • set compilerOptions.allowJsto true in tsconfig.json

Upgrading from v1 to v2

  • Replace all // comments with jsDocs /** */
  • Replace @scope default with @scopeDefault
  • Relace @.. file/folder prefixes with .scope.ts files.
  • Make sure .eslintrc.js and tsconfig.json configs are updated

Hints

  • Type @ above exports for automatic jsDoc generation.
  • Use autocompletion provided within jsDocs and .scope.ts files.
  • Root .scope.ts file (next to package.json) sets the default for the whole project. Having export default '*' there will make all exports global by default if you prefer a less strict approach.

Issues

⚠️ To re-lint an import in VSCode after updating a scope declaration either touch this import or restart the ESLint Server (ESLint limitation).