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exports.test.ts
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exports.test.ts
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import { describe, it, expect } from 'vitest'
import { ESMExport, findExports, findExportNames, resolveModuleExportNames } from '../src'
describe('findExports', () => {
const tests: Record<string, Partial<ESMExport>> = {
'export function useA () { return \'a\' }': { name: 'useA', type: 'declaration' },
'export const useD = () => { return \'d\' }': { name: 'useD', type: 'declaration' },
'export { useB, _useC as useC }': { names: ['useB', 'useC'], type: 'named' },
'export default foo': { type: 'default', name: 'default', names: ['default'] },
'export { default } from "./other"': { type: 'default', name: 'default', names: ['default'], specifier: './other' },
'export { default , } from "./other"': { type: 'default', name: 'default', names: ['default'], specifier: './other' },
'export { useA , } from "./path"': { type: 'named', name: 'useA', names: ['useA'], specifier: './path' },
'export { useA , useB , } from "./path"': { type: 'named', names: ['useA', 'useB'], specifier: './path' },
'export async function foo ()': { type: 'declaration', names: ['foo'] },
'export const $foo = () => {}': { type: 'declaration', names: ['$foo'] },
'export { foo as default }': { type: 'default', name: 'default', names: ['default'] },
'export * from "./other"': { type: 'star', specifier: './other' },
'export * as foo from "./other"': { type: 'star', specifier: './other', name: 'foo' }
}
for (const [input, test] of Object.entries(tests)) {
it(input.replace(/\n/g, '\\n'), () => {
const matches = findExports(input)
expect(matches.length).toEqual(1)
const match = matches[0]
if (test.type) {
expect(match.type).toEqual(test.type)
}
if (test.name) {
expect(match.name).toEqual(test.name)
}
if (test.names) {
expect(match.names).toEqual(test.names)
}
if (test.specifier) {
expect(match.specifier).toEqual(test.specifier)
}
})
}
it('handles multiple exports', () => {
const matches = findExports(`
export { useTestMe1 } from "@/test/foo1";
export { useTestMe2 } from "@/test/foo2";
export { useTestMe3 } from "@/test/foo3";
`)
expect(matches.length).to.eql(3)
})
it('works with multiple named exports', () => {
const code = `
export { foo } from 'foo1';
export { bar } from 'foo2';
export { foobar } from 'foo2';
`
const matches = findExports(code)
expect(matches).to.have.lengthOf(3)
})
it('the commented out export should be filtered out', () => {
const code = `
// export { foo } from 'foo1';
// exports default 'foo';
// export { useB, _useC as useC };
// export function useA () { return 'a' }
// export { default } from "./other"
// export async function foo () {}
// export { foo as default }
//export * from "./other"
//export * as foo from "./other"
/**
* export const a = 123
* export { foo } from 'foo1';
* exports default 'foo'
* export function useA () { return 'a' }
* export { useB, _useC as useC };
*export { default } from "./other"
*export async function foo () {}
* export { foo as default }
* export * from "./other"
export * as foo from "./other"
*/
export { bar } from 'foo2';
export { foobar } from 'foo2';
`
const matches = findExports(code)
expect(matches).to.have.lengthOf(2)
})
it('export in string', () => {
const tests: string[] = [
'export function useA () { return \'a\' }',
'export const useD = () => { return \'d\' }',
'export { useB, _useC as useC }',
'export default foo',
'export { default } from "./other"',
'export async function foo ()',
'export const $foo = () => {}',
'export { foo as default }',
'export * from "./other"',
'export * as foo from "./other"'
]
const code = tests.reduce((codeStr, statement, idx) => {
codeStr = `
${codeStr}
const test${idx}0 = "${statement}"
const test${idx}1 = \`
test1
${statement}
test2
\`
`
return codeStr
}, 'export { bar } from \'foo2\'; \n export { foobar } from \'foo2\';')
const matches = findExports(code)
expect(matches).to.have.lengthOf(2)
})
})
describe('fineExportNames', () => {
it('findExportNames', () => {
expect(findExportNames(`
export const foo = 'bar'
export { bar, baz }
export default something
`)).toMatchInlineSnapshot(`
[
"foo",
"bar",
"baz",
"default",
]
`)
})
})
describe('resolveModuleExportNames', () => {
it('resolveModuleExportNames', async () => {
expect(await resolveModuleExportNames('pathe')).toMatchInlineSnapshot(`
[
"basename",
"delimiter",
"dirname",
"extname",
"format",
"isAbsolute",
"join",
"normalize",
"normalizeString",
"parse",
"relative",
"resolve",
"sep",
"toNamespacedPath",
]
`)
})
})