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// Flags: --experimental-modules
import { mustCall } from '../common/index.mjs';
import { ok, deepStrictEqual, strictEqual } from 'assert';
import { requireFixture, importFixture } from '../fixtures/pkgexports.mjs';
[requireFixture, importFixture].forEach((loadFixture) => {
const isRequire = loadFixture === requireFixture;
const validSpecifiers = new Map([
// A simple mapping of a path.
['pkgexports/valid-cjs', { default: 'asdf' }],
// A directory mapping, pointing to the package root.
['pkgexports/sub/asdf.js', { default: 'asdf' }],
// A mapping pointing to a file that needs special encoding (%20) in URLs.
['pkgexports/space', { default: 'encoded path' }],
// Verifying that normal packages still work with exports turned on.
isRequire ? ['baz/index', { default: 'eye catcher' }] : [null],
// Fallbacks
['pkgexports/fallbackdir/asdf.js', { default: 'asdf' }],
['pkgexports/fallbackfile', { default: 'asdf' }],
// Dot main
['pkgexports', { default: 'asdf' }],
]);
for (const [validSpecifier, expected] of validSpecifiers) {
if (validSpecifier === null) continue;
loadFixture(validSpecifier)
.then(mustCall((actual) => {
deepStrictEqual({ ...actual }, expected);
}));
}
const undefinedExports = new Map([
// There's no such export - so there's nothing to do.
['pkgexports/missing', './missing'],
// The file exists but isn't exported. The exports is a number which counts
// as a non-null value without any properties, just like `{}`.
['pkgexports-number/hidden.js', './hidden.js'],
]);
const invalidExports = new Map([
// Even though 'pkgexports/sub/asdf.js' works, alternate "path-like"
// variants do not to prevent confusion and accidental loopholes.
['pkgexports/sub/./../asdf.js', './sub/./../asdf.js'],
// This path steps back inside the package but goes through an exports
// target that escapes the package, so we still catch that as invalid
['pkgexports/belowdir/pkgexports/asdf.js', './belowdir/pkgexports/asdf.js'],
// This target file steps below the package
['pkgexports/belowfile', './belowfile'],
// Directory mappings require a trailing / to work
['pkgexports/missingtrailer/x', './missingtrailer/x'],
// Invalid target handling
['pkgexports/null', './null'],
['pkgexports/invalid1', './invalid1'],
['pkgexports/invalid2', './invalid2'],
['pkgexports/invalid3', './invalid3'],
['pkgexports/invalid4', './invalid4'],
// Missing / invalid fallbacks
['pkgexports/nofallback1', './nofallback1'],
['pkgexports/nofallback2', './nofallback2'],
// Reaching into nested node_modules
['pkgexports/nodemodules', './nodemodules'],
]);
for (const [specifier, subpath] of undefinedExports) {
loadFixture(specifier).catch(mustCall((err) => {
strictEqual(err.code, (isRequire ? '' : 'ERR_') + 'MODULE_NOT_FOUND');
assertStartsWith(err.message, 'Package exports');
assertIncludes(err.message, `do not define a '${subpath}' subpath`);
}));
}
for (const [specifier, subpath] of invalidExports) {
loadFixture(specifier).catch(mustCall((err) => {
strictEqual(err.code, (isRequire ? '' : 'ERR_') + 'MODULE_NOT_FOUND');
assertStartsWith(err.message, (isRequire ? 'Package exports' :
'Cannot resolve'));
assertIncludes(err.message, isRequire ?
`do not define a valid '${subpath}' subpath` :
`matched for '${subpath}'`);
}));
}
// Covering out bases - not a file is still not a file after dir mapping.
loadFixture('pkgexports/sub/not-a-file.js').catch(mustCall((err) => {
strictEqual(err.code, (isRequire ? '' : 'ERR_') + 'MODULE_NOT_FOUND');
// ESM returns a full file path
assertStartsWith(err.message, isRequire ?
'Cannot find module \'pkgexports/sub/not-a-file.js\'' :
'Cannot find module');
}));
// THe use of %2F escapes in paths fails loading
loadFixture('pkgexports/sub/..%2F..%2Fbar.js').catch(mustCall((err) => {
strictEqual(err.code, isRequire ? 'ERR_INVALID_FILE_URL_PATH' :
'ERR_MODULE_NOT_FOUND');
}));
});
function assertStartsWith(actual, expected) {
const start = actual.toString().substr(0, expected.length);
strictEqual(start, expected);
}
function assertIncludes(actual, expected) {
ok(actual.toString().indexOf(expected),
`${JSON.stringify(actual)} includes ${JSON.stringify(expected)}`);
}
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