/
no-unused-modules.js
798 lines (751 loc) · 30.7 KB
/
no-unused-modules.js
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import { test, testFilePath } from '../../src/utils'
import jsxConfig from '../../../config/react'
import typescriptConfig from '../../../config/typescript'
import { RuleTester } from 'eslint'
import fs from 'fs'
const ruleTester = new RuleTester()
, typescriptRuleTester = new RuleTester(typescriptConfig)
, jsxRuleTester = new RuleTester(jsxConfig)
, rule = require('rules/no-unused-modules')
const error = message => ({ ruleId: 'no-unused-modules', message })
const missingExportsOptions = [{
missingExports: true,
}]
const unusedExportsOptions = [{
unusedExports: true,
src: [testFilePath('./no-unused-modules/**/*.js')],
ignoreExports: [testFilePath('./no-unused-modules/*ignored*.js')],
}]
const unusedExportsTypescriptOptions = [{
unusedExports: true,
src: [testFilePath('./no-unused-modules/typescript')],
ignoreExports: undefined,
}]
const unusedExportsJsxOptions = [{
unusedExports: true,
src: [testFilePath('./no-unused-modules/jsx')],
ignoreExports: undefined,
}]
// tests for missing exports
ruleTester.run('no-unused-modules', rule, {
valid: [
test({ code: 'export default function noOptions() {}' }),
test({ options: missingExportsOptions,
code: 'export default () => 1'}),
test({ options: missingExportsOptions,
code: 'export const a = 1'}),
test({ options: missingExportsOptions,
code: 'const a = 1; export { a }'}),
test({ options: missingExportsOptions,
code: 'function a() { return true }; export { a }'}),
test({ options: missingExportsOptions,
code: 'const a = 1; const b = 2; export { a, b }'}),
test({ options: missingExportsOptions,
code: 'const a = 1; export default a'}),
test({ options: missingExportsOptions,
code: 'export class Foo {}'}),
],
invalid: [
test({
options: missingExportsOptions,
code: 'const a = 1',
errors: [error(`No exports found`)],
}),
test({
options: missingExportsOptions,
code: '/* const a = 1 */',
errors: [error(`No exports found`)],
}),
],
})
// tests for exports
ruleTester.run('no-unused-modules', rule, {
valid: [
test({ options: unusedExportsOptions,
code: 'import { o2 } from "./file-o";export default () => 12',
filename: testFilePath('./no-unused-modules/file-a.js'),
parser: require.resolve('babel-eslint')}),
test({ options: unusedExportsOptions,
code: 'export const b = 2',
filename: testFilePath('./no-unused-modules/file-b.js'),
parser: require.resolve('babel-eslint')}),
test({ options: unusedExportsOptions,
code: 'const c1 = 3; function c2() { return 3 }; export { c1, c2 }',
filename: testFilePath('./no-unused-modules/file-c.js'),
parser: require.resolve('babel-eslint')}),
test({ options: unusedExportsOptions,
code: 'export function d() { return 4 }',
filename: testFilePath('./no-unused-modules/file-d.js'),
parser: require.resolve('babel-eslint')}),
test({ options: unusedExportsOptions,
code: 'export class q { q0() {} }',
filename: testFilePath('./no-unused-modules/file-q.js'),
parser: require.resolve('babel-eslint')}),
test({ options: unusedExportsOptions,
code: 'const e0 = 5; export { e0 as e }',
filename: testFilePath('./no-unused-modules/file-e.js'),
parser: require.resolve('babel-eslint')}),
test({ options: unusedExportsOptions,
code: 'const l0 = 5; const l = 10; export { l0 as l1, l }; export default () => {}',
filename: testFilePath('./no-unused-modules/file-l.js'),
parser: require.resolve('babel-eslint')}),
test({ options: unusedExportsOptions,
code: 'const o0 = 0; const o1 = 1; export { o0, o1 as o2 }; export default () => {}',
filename: testFilePath('./no-unused-modules/file-o.js'),
parser: require.resolve('babel-eslint')}),
],
invalid: [
test({ options: unusedExportsOptions,
code: `import eslint from 'eslint'
import fileA from './file-a'
import { b } from './file-b'
import { c1, c2 } from './file-c'
import { d } from './file-d'
import { e } from './file-e'
import { e2 } from './file-e'
import { h2 } from './file-h'
import * as l from './file-l'
export * from './file-n'
export { default, o0, o3 } from './file-o'
export { p } from './file-p'
import s from './file-s'`,
filename: testFilePath('./no-unused-modules/file-0.js'),
errors: [
error(`exported declaration 'default' not used within other modules`),
error(`exported declaration 'o0' not used within other modules`),
error(`exported declaration 'o3' not used within other modules`),
error(`exported declaration 'p' not used within other modules`),
]}),
test({ options: unusedExportsOptions,
code: `const n0 = 'n0'; const n1 = 42; export { n0, n1 }; export default () => {}`,
filename: testFilePath('./no-unused-modules/file-n.js'),
errors: [error(`exported declaration 'default' not used within other modules`)]}),
],
})
// test for unused exports
ruleTester.run('no-unused-modules', rule, {
valid: [],
invalid: [
test({ options: unusedExportsOptions,
code: 'export default () => 13',
filename: testFilePath('./no-unused-modules/file-f.js'),
errors: [error(`exported declaration 'default' not used within other modules`)]}),
test({ options: unusedExportsOptions,
code: 'export const g = 2',
filename: testFilePath('./no-unused-modules/file-g.js'),
errors: [error(`exported declaration 'g' not used within other modules`)]}),
test({ options: unusedExportsOptions,
code: 'const h1 = 3; function h2() { return 3 }; const h3 = true; export { h1, h2, h3 }',
filename: testFilePath('./no-unused-modules/file-h.js'),
errors: [error(`exported declaration 'h1' not used within other modules`)]}),
test({ options: unusedExportsOptions,
code: 'const i1 = 3; function i2() { return 3 }; export { i1, i2 }',
filename: testFilePath('./no-unused-modules/file-i.js'),
errors: [
error(`exported declaration 'i1' not used within other modules`),
error(`exported declaration 'i2' not used within other modules`),
]}),
test({ options: unusedExportsOptions,
code: 'export function j() { return 4 }',
filename: testFilePath('./no-unused-modules/file-j.js'),
errors: [error(`exported declaration 'j' not used within other modules`)]}),
test({ options: unusedExportsOptions,
code: 'export class q { q0() {} }',
filename: testFilePath('./no-unused-modules/file-q.js'),
errors: [error(`exported declaration 'q' not used within other modules`)]}),
test({ options: unusedExportsOptions,
code: 'const k0 = 5; export { k0 as k }',
filename: testFilePath('./no-unused-modules/file-k.js'),
errors: [error(`exported declaration 'k' not used within other modules`)]}),
],
})
// test for unused exports with `import()`
ruleTester.run('no-unused-modules', rule, {
valid: [
test({ options: unusedExportsOptions,
code: `
export const a = 10
export const b = 20
export const c = 30
const d = 40
export default d
`,
parser: require.resolve('babel-eslint'),
filename: testFilePath('./no-unused-modules/exports-for-dynamic-js.js')}),
],
invalid: [
],
})
typescriptRuleTester.run('no-unused-modules', rule, {
valid: [
test({ options: unusedExportsTypescriptOptions,
code: `
export const ts_a = 10
export const ts_b = 20
export const ts_c = 30
const ts_d = 40
export default ts_d
`,
parser: require.resolve('@typescript-eslint/parser'),
filename: testFilePath('./no-unused-modules/typescript/exports-for-dynamic-ts.ts')}),
],
invalid: [
],
})
// // test for export from
ruleTester.run('no-unused-modules', rule, {
valid: [
test({ options: unusedExportsOptions,
code: `export { default } from './file-o'`,
filename: testFilePath('./no-unused-modules/file-s.js')}),
],
invalid: [
test({ options: unusedExportsOptions,
code: `export { k } from '${testFilePath('./no-unused-modules/file-k.js')}'`,
filename: testFilePath('./no-unused-modules/file-j.js'),
errors: [error(`exported declaration 'k' not used within other modules`)]}),
],
})
ruleTester.run('no-unused-modules', rule, {
valid: [
test({ options: unusedExportsOptions,
code: 'const k0 = 5; export { k0 as k }',
filename: testFilePath('./no-unused-modules/file-k.js')}),
],
invalid: [],
})
// test for ignored files
ruleTester.run('no-unused-modules', rule, {
valid: [
test({ options: unusedExportsOptions,
code: 'export default () => 14',
filename: testFilePath('./no-unused-modules/file-ignored-a.js')}),
test({ options: unusedExportsOptions,
code: 'export const b = 2',
filename: testFilePath('./no-unused-modules/file-ignored-b.js')}),
test({ options: unusedExportsOptions,
code: 'const c1 = 3; function c2() { return 3 }; export { c1, c2 }',
filename: testFilePath('./no-unused-modules/file-ignored-c.js')}),
test({ options: unusedExportsOptions,
code: 'export function d() { return 4 }',
filename: testFilePath('./no-unused-modules/file-ignored-d.js')}),
test({ options: unusedExportsOptions,
code: 'const f = 5; export { f as e }',
filename: testFilePath('./no-unused-modules/file-ignored-e.js')}),
test({ options: unusedExportsOptions,
code: 'const l0 = 5; const l = 10; export { l0 as l1, l }; export default () => {}',
filename: testFilePath('./no-unused-modules/file-ignored-l.js')}),
],
invalid: [],
})
// add named import for file with default export
ruleTester.run('no-unused-modules', rule, {
valid: [
test({ options: unusedExportsOptions,
code: `import { f } from '${testFilePath('./no-unused-modules/file-f.js')}'`,
filename: testFilePath('./no-unused-modules/file-0.js')}),
],
invalid: [
test({ options: unusedExportsOptions,
code: 'export default () => 15',
filename: testFilePath('./no-unused-modules/file-f.js'),
errors: [error(`exported declaration 'default' not used within other modules`)]}),
],
})
// add default import for file with default export
ruleTester.run('no-unused-modules', rule, {
valid: [
test({ options: unusedExportsOptions,
code: `import f from '${testFilePath('./no-unused-modules/file-f.js')}'`,
filename: testFilePath('./no-unused-modules/file-0.js')}),
test({ options: unusedExportsOptions,
code: 'export default () => 16',
filename: testFilePath('./no-unused-modules/file-f.js')}),
],
invalid: [],
})
// add default import for file with named export
ruleTester.run('no-unused-modules', rule, {
valid: [
test({ options: unusedExportsOptions,
code: `import g from '${testFilePath('./no-unused-modules/file-g.js')}';import {h} from '${testFilePath('./no-unused-modules/file-gg.js')}'`,
filename: testFilePath('./no-unused-modules/file-0.js')}),
],
invalid: [
test({ options: unusedExportsOptions,
code: 'export const g = 2',
filename: testFilePath('./no-unused-modules/file-g.js'),
errors: [error(`exported declaration 'g' not used within other modules`)]})],
})
// add named import for file with named export
ruleTester.run('no-unused-modules', rule, {
valid: [
test({ options: unusedExportsOptions,
code: `import { g } from '${testFilePath('./no-unused-modules/file-g.js')}'; import eslint from 'eslint'`,
filename: testFilePath('./no-unused-modules/file-0.js')}),
test({ options: unusedExportsOptions,
code: 'export const g = 2',
filename: testFilePath('./no-unused-modules/file-g.js')}),
],
invalid: [],
})
// add different named import for file with named export
ruleTester.run('no-unused-modules', rule, {
valid: [
test({ options: unusedExportsOptions,
code: `import { c } from '${testFilePath('./no-unused-modules/file-b.js')}'`,
filename: testFilePath('./no-unused-modules/file-0.js')}),
],
invalid: [
test({ options: unusedExportsOptions,
code: 'export const b = 2',
filename: testFilePath('./no-unused-modules/file-b.js'),
errors: [error(`exported declaration 'b' not used within other modules`)]}),
],
})
// add renamed named import for file with named export
ruleTester.run('no-unused-modules', rule, {
valid: [
test({ options: unusedExportsOptions,
code: `import { g as g1 } from '${testFilePath('./no-unused-modules/file-g.js')}'; import eslint from 'eslint'`,
filename: testFilePath('./no-unused-modules/file-0.js')}),
test({ options: unusedExportsOptions,
code: 'export const g = 2',
filename: testFilePath('./no-unused-modules/file-g.js')}),
],
invalid: [],
})
// add different renamed named import for file with named export
ruleTester.run('no-unused-modules', rule, {
valid: [
test({ options: unusedExportsOptions,
code: `import { g1 as g } from '${testFilePath('./no-unused-modules/file-g.js')}'`,
filename: testFilePath('./no-unused-modules/file-0.js')}),
],
invalid: [
test({ options: unusedExportsOptions,
code: 'export const g = 2',
filename: testFilePath('./no-unused-modules/file-g.js'),
errors: [error(`exported declaration 'g' not used within other modules`)]}),
],
})
// remove default import for file with default export
ruleTester.run('no-unused-modules', rule, {
valid: [
test({ options: unusedExportsOptions,
code: `import { a1, a2 } from '${testFilePath('./no-unused-modules/file-a.js')}'`,
filename: testFilePath('./no-unused-modules/file-0.js')}),
],
invalid: [
test({ options: unusedExportsOptions,
code: 'export default () => 17',
filename: testFilePath('./no-unused-modules/file-a.js'),
errors: [error(`exported declaration 'default' not used within other modules`)]}),
],
})
// add namespace import for file with unused exports
ruleTester.run('no-unused-modules', rule, {
valid: [],
invalid: [
test({ options: unusedExportsOptions,
code: 'const m0 = 5; const m = 10; export { m0 as m1, m }; export default () => {}',
filename: testFilePath('./no-unused-modules/file-m.js'),
errors: [
error(`exported declaration 'm1' not used within other modules`),
error(`exported declaration 'm' not used within other modules`),
error(`exported declaration 'default' not used within other modules`),
]}),
],
})
ruleTester.run('no-unused-modules', rule, {
valid: [
test({ options: unusedExportsOptions,
code: `import * as m from '${testFilePath('./no-unused-modules/file-m.js')}'; import unknown from 'unknown-module'`,
filename: testFilePath('./no-unused-modules/file-0.js')}),
test({ options: unusedExportsOptions,
code: 'const m0 = 5; const m = 10; export { m0 as m1, m }; export default () => {}',
filename: testFilePath('./no-unused-modules/file-m.js')}),
],
invalid: [],
})
// remove all exports
ruleTester.run('no-unused-modules', rule, {
valid: [
test({ options: unusedExportsOptions,
code: `/* import * as m from '${testFilePath('./no-unused-modules/file-m.js')}' */`,
filename: testFilePath('./no-unused-modules/file-0.js')}),
],
invalid: [
test({ options: unusedExportsOptions,
code: 'const m0 = 5; const m = 10; export { m0 as m1, m }; export default () => {}',
filename: testFilePath('./no-unused-modules/file-m.js'),
errors: [
error(`exported declaration 'm1' not used within other modules`),
error(`exported declaration 'm' not used within other modules`),
error(`exported declaration 'default' not used within other modules`),
]}),
],
})
ruleTester.run('no-unused-modules', rule, {
valid: [
test({ options: unusedExportsOptions,
code: `export * from '${testFilePath('./no-unused-modules/file-m.js')}';`,
filename: testFilePath('./no-unused-modules/file-0.js')}),
],
invalid: [],
})
ruleTester.run('no-unused-modules', rule, {
valid: [],
invalid: [
test({ options: unusedExportsOptions,
code: 'const m0 = 5; const m = 10; export { m0 as m1, m }; export default () => {}',
filename: testFilePath('./no-unused-modules/file-m.js'),
errors: [error(`exported declaration 'default' not used within other modules`)]}),
],
})
ruleTester.run('no-unused-modules', rule, {
valid: [],
invalid: [
test({ options: unusedExportsOptions,
code: `export { m1, m} from '${testFilePath('./no-unused-modules/file-m.js')}';`,
filename: testFilePath('./no-unused-modules/file-0.js'),
errors: [
error(`exported declaration 'm1' not used within other modules`),
error(`exported declaration 'm' not used within other modules`),
]}),
test({ options: unusedExportsOptions,
code: 'const m0 = 5; const m = 10; export { m0 as m1, m }; export default () => {}',
filename: testFilePath('./no-unused-modules/file-m.js'),
errors: [error(`exported declaration 'default' not used within other modules`)]}),
],
})
ruleTester.run('no-unused-modules', rule, {
valid: [
// test({ options: unusedExportsOptions,
// code: `export { default, m1 } from '${testFilePath('./no-unused-modules/file-m.js')}';`,
// filename: testFilePath('./no-unused-modules/file-0.js')}),
],
invalid: [
test({ options: unusedExportsOptions,
code: `export { default, m1 } from '${testFilePath('./no-unused-modules/file-m.js')}';`,
filename: testFilePath('./no-unused-modules/file-0.js'),
errors: [
error(`exported declaration 'default' not used within other modules`),
error(`exported declaration 'm1' not used within other modules`),
]}),
test({ options: unusedExportsOptions,
code: 'const m0 = 5; const m = 10; export { m0 as m1, m }; export default () => {}',
filename: testFilePath('./no-unused-modules/file-m.js'),
errors: [error(`exported declaration 'm' not used within other modules`)]}),
],
})
describe('test behaviour for new file', () => {
before(() => {
fs.writeFileSync(testFilePath('./no-unused-modules/file-added-0.js'), '', {encoding: 'utf8'})
})
// add import in newly created file
ruleTester.run('no-unused-modules', rule, {
valid: [
test({ options: unusedExportsOptions,
code: `import * as m from '${testFilePath('./no-unused-modules/file-m.js')}'`,
filename: testFilePath('./no-unused-modules/file-added-0.js')}),
test({ options: unusedExportsOptions,
code: 'const m0 = 5; const m = 10; export { m0 as m1, m }; export default () => {}',
filename: testFilePath('./no-unused-modules/file-m.js')}),
],
invalid: [],
})
// add export for newly created file
ruleTester.run('no-unused-modules', rule, {
valid: [],
invalid: [
test({ options: unusedExportsOptions,
code: `export default () => {2}`,
filename: testFilePath('./no-unused-modules/file-added-0.js'),
errors: [error(`exported declaration 'default' not used within other modules`)]}),
],
})
ruleTester.run('no-unused-modules', rule, {
valid: [
test({ options: unusedExportsOptions,
code: `import def from '${testFilePath('./no-unused-modules/file-added-0.js')}'`,
filename: testFilePath('./no-unused-modules/file-0.js')}),
test({ options: unusedExportsOptions,
code: `export default () => {}`,
filename: testFilePath('./no-unused-modules/file-added-0.js')}),
],
invalid: [],
})
// export * only considers named imports. default imports still need to be reported
ruleTester.run('no-unused-modules', rule, {
valid: [
test({ options: unusedExportsOptions,
code: `export * from '${testFilePath('./no-unused-modules/file-added-0.js')}'`,
filename: testFilePath('./no-unused-modules/file-0.js')}),
// Test export * from 'external-compiled-library'
test({ options: unusedExportsOptions,
code: `export * from 'external-compiled-library'`,
filename: testFilePath('./no-unused-modules/file-r.js'),
}),
],
invalid: [
test({ options: unusedExportsOptions,
code: `export const z = 'z';export default () => {}`,
filename: testFilePath('./no-unused-modules/file-added-0.js'),
errors: [error(`exported declaration 'default' not used within other modules`)]}),
],
})
ruleTester.run('no-unused-modules', rule, {
valid: [
test({ options: unusedExportsOptions,
code: `export const a = 2`,
filename: testFilePath('./no-unused-modules/file-added-0.js')}),
],
invalid: [],
})
// remove export *. all exports need to be reported
ruleTester.run('no-unused-modules', rule, {
valid: [],
invalid: [
test({ options: unusedExportsOptions,
code: `export { a } from '${testFilePath('./no-unused-modules/file-added-0.js')}'`,
filename: testFilePath('./no-unused-modules/file-0.js'),
errors: [error(`exported declaration 'a' not used within other modules`)]}),
test({ options: unusedExportsOptions,
code: `export const z = 'z';export default () => {}`,
filename: testFilePath('./no-unused-modules/file-added-0.js'),
errors: [
error(`exported declaration 'z' not used within other modules`),
error(`exported declaration 'default' not used within other modules`),
]}),
],
})
describe('test behaviour for new file', () => {
before(() => {
fs.writeFileSync(testFilePath('./no-unused-modules/file-added-1.js'), '', {encoding: 'utf8'})
})
ruleTester.run('no-unused-modules', rule, {
valid: [
test({ options: unusedExportsOptions,
code: `export * from '${testFilePath('./no-unused-modules/file-added-1.js')}'`,
filename: testFilePath('./no-unused-modules/file-0.js')}),
],
invalid: [
test({ options: unusedExportsOptions,
code: `export const z = 'z';export default () => {}`,
filename: testFilePath('./no-unused-modules/file-added-1.js'),
errors: [error(`exported declaration 'default' not used within other modules`)]}),
],
})
after(() => {
if (fs.existsSync(testFilePath('./no-unused-modules/file-added-1.js'))) {
fs.unlinkSync(testFilePath('./no-unused-modules/file-added-1.js'))
}
})
})
after(() => {
if (fs.existsSync(testFilePath('./no-unused-modules/file-added-0.js'))) {
fs.unlinkSync(testFilePath('./no-unused-modules/file-added-0.js'))
}
})
})
describe('test behaviour for new file', () => {
before(() => {
fs.writeFileSync(testFilePath('./no-unused-modules/file-added-2.js'), '', {encoding: 'utf8'})
})
ruleTester.run('no-unused-modules', rule, {
valid: [
test({ options: unusedExportsOptions,
code: `import added from '${testFilePath('./no-unused-modules/file-added-2.js')}'`,
filename: testFilePath('./no-unused-modules/file-added-1.js')}),
test({ options: unusedExportsOptions,
code: `export default () => {}`,
filename: testFilePath('./no-unused-modules/file-added-2.js')}),
],
invalid: [],
})
after(() => {
if (fs.existsSync(testFilePath('./no-unused-modules/file-added-2.js'))) {
fs.unlinkSync(testFilePath('./no-unused-modules/file-added-2.js'))
}
})
})
describe('test behaviour for new file', () => {
before(() => {
fs.writeFileSync(testFilePath('./no-unused-modules/file-added-3.js'), '', {encoding: 'utf8'})
})
ruleTester.run('no-unused-modules', rule, {
valid: [
test({ options: unusedExportsOptions,
code: `import { added } from '${testFilePath('./no-unused-modules/file-added-3.js')}'`,
filename: testFilePath('./no-unused-modules/file-added-1.js')}),
test({ options: unusedExportsOptions,
code: `export const added = () => {}`,
filename: testFilePath('./no-unused-modules/file-added-3.js')}),
],
invalid: [],
})
after(() => {
if (fs.existsSync(testFilePath('./no-unused-modules/file-added-3.js'))) {
fs.unlinkSync(testFilePath('./no-unused-modules/file-added-3.js'))
}
})
})
describe('test behaviour for new file', () => {
before(() => {
fs.writeFileSync(testFilePath('./no-unused-modules/file-added-4.js.js'), '', {encoding: 'utf8'})
})
ruleTester.run('no-unused-modules', rule, {
valid: [
test({ options: unusedExportsOptions,
code: `import * as added from '${testFilePath('./no-unused-modules/file-added-4.js.js')}'`,
filename: testFilePath('./no-unused-modules/file-added-1.js')}),
test({ options: unusedExportsOptions,
code: `export const added = () => {}; export default () => {}`,
filename: testFilePath('./no-unused-modules/file-added-4.js.js')}),
],
invalid: [],
})
after(() => {
if (fs.existsSync(testFilePath('./no-unused-modules/file-added-4.js.js'))) {
fs.unlinkSync(testFilePath('./no-unused-modules/file-added-4.js.js'))
}
})
})
describe('do not report missing export for ignored file', () => {
ruleTester.run('no-unused-modules', rule, {
valid: [
test({ options: [{
src: [testFilePath('./no-unused-modules/**/*.js')],
ignoreExports: [testFilePath('./no-unused-modules/*ignored*.js')],
missingExports: true,
}],
code: 'export const test = true',
filename: testFilePath('./no-unused-modules/file-ignored-a.js')}),
],
invalid: [],
})
})
// lint file not available in `src`
ruleTester.run('no-unused-modules', rule, {
valid: [
test({ options: unusedExportsOptions,
code: `export const jsxFoo = 'foo'; export const jsxBar = 'bar'`,
filename: testFilePath('../jsx/named.jsx')}),
],
invalid: [],
})
describe('do not report unused export for files mentioned in package.json', () => {
ruleTester.run('no-unused-modules', rule, {
valid: [
test({ options: unusedExportsOptions,
code: 'export const bin = "bin"',
filename: testFilePath('./no-unused-modules/bin.js')}),
test({ options: unusedExportsOptions,
code: 'export const binObject = "binObject"',
filename: testFilePath('./no-unused-modules/binObject/index.js')}),
test({ options: unusedExportsOptions,
code: 'export const browser = "browser"',
filename: testFilePath('./no-unused-modules/browser.js')}),
test({ options: unusedExportsOptions,
code: 'export const browserObject = "browserObject"',
filename: testFilePath('./no-unused-modules/browserObject/index.js')}),
test({ options: unusedExportsOptions,
code: 'export const main = "main"',
filename: testFilePath('./no-unused-modules/main/index.js')}),
],
invalid: [
test({ options: unusedExportsOptions,
code: 'export const privatePkg = "privatePkg"',
filename: testFilePath('./no-unused-modules/privatePkg/index.js'),
errors: [error(`exported declaration 'privatePkg' not used within other modules`)]}),
],
})
})
describe('correctly report flow types', () => {
ruleTester.run('no-unused-modules', rule, {
valid: [
test({
options: unusedExportsOptions,
code: 'import { type FooType } from "./flow-2";',
parser: require.resolve('babel-eslint'),
filename: testFilePath('./no-unused-modules/flow-0.js'),
}),
test({
options: unusedExportsOptions,
code: `// @flow strict
export type FooType = string;`,
parser: require.resolve('babel-eslint'),
filename: testFilePath('./no-unused-modules/flow-2.js'),
}),
],
invalid: [
test({
options: unusedExportsOptions,
code: `// @flow strict
export type Bar = string;`,
parser: require.resolve('babel-eslint'),
filename: testFilePath('./no-unused-modules/flow-1.js'),
errors: [
error(`exported declaration 'Bar' not used within other modules`),
],
}),
],
})
})
describe('Avoid errors if re-export all from umd compiled library', () => {
ruleTester.run('no-unused-modules', rule, {
valid: [
test({ options: unusedExportsOptions,
code: `export * from '${testFilePath('./no-unused-modules/bin.js')}'`,
filename: testFilePath('./no-unused-modules/main/index.js')}),
],
invalid: [],
})
})
describe('correctly work with Typescript only files', () => {
typescriptRuleTester.run('no-unused-modules', rule, {
valid: [
test({
options: unusedExportsTypescriptOptions,
code: 'import a from "file-ts-a";',
parser: require.resolve('babel-eslint'),
filename: testFilePath('./no-unused-modules/typescript/file-ts-a.ts'),
}),
],
invalid: [
test({
options: unusedExportsTypescriptOptions,
code: `export const b = 2;`,
parser: require.resolve('babel-eslint'),
filename: testFilePath('./no-unused-modules/typescript/file-ts-b.ts'),
errors: [
error(`exported declaration 'b' not used within other modules`),
],
}),
],
})
})
describe('correctly work with JSX only files', () => {
jsxRuleTester.run('no-unused-modules', rule, {
valid: [
test({
options: unusedExportsJsxOptions,
code: 'import a from "file-jsx-a";',
parser: require.resolve('babel-eslint'),
filename: testFilePath('./no-unused-modules/jsx/file-jsx-a.jsx'),
}),
],
invalid: [
test({
options: unusedExportsJsxOptions,
code: `export const b = 2;`,
parser: require.resolve('babel-eslint'),
filename: testFilePath('./no-unused-modules/jsx/file-jsx-b.jsx'),
errors: [
error(`exported declaration 'b' not used within other modules`),
],
}),
],
})
})