eslint-plugin-export-scope
v2.4.0
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Don't leak LOCAL utils, states, components into the global scope
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eslint-plugin-export-scope
Don't leak LOCAL utils, states, contexts, components into the global scope.
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.allowJs
totrue
intsconfig.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
andtsconfig.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. Havingexport 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).