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// @flow
import assert from 'assert';
import config from '../';
import packageJson from '../package.json';
describe('@parcel/config-default', () => {
let packageJsonDependencyNames: Set<string>;
let configPackageReferences: Set<string>;
before(() => {
packageJsonDependencyNames = new Set([
...Object.keys(packageJson.dependencies || {}),
...Object.keys(packageJson.parcelDependencies || {}),
]);
configPackageReferences = collectConfigPackageReferences(config);
});
describe('package.json', () => {
it('includes every package referenced in the config', () => {
let missingReferences = [];
for (let reference of configPackageReferences) {
if (!packageJsonDependencyNames.has(reference)) {
missingReferences.push(reference);
}
}
// Assert with deepEqual rather than e.g. missingReferences.size as the
// assertion message with deepEqual enumerates the differences nicely
assert.deepEqual(missingReferences, []);
});
it('does not include packages not referenced in the config', () => {
let unnecessaryDependencies = [];
for (let dependency of packageJsonDependencyNames) {
if (!configPackageReferences.has(dependency)) {
unnecessaryDependencies.push(dependency);
}
}
assert.deepEqual(unnecessaryDependencies, []);
});
});
});
function collectConfigPackageReferences(
configSection: mixed,
references: Set<string> = new Set(),
): Set<string> {
if (configSection == null || typeof configSection !== 'object') {
throw new TypeError('Expected config section to be an object or an array');
}
for (let value of Object.values(configSection)) {
if (typeof value === 'string') {
if (value === '...') {
continue;
}
references.add(value);
} else if (configSection != null && typeof configSection === 'object') {
collectConfigPackageReferences(value, references);
} else {
throw new Error(
'Parcel configs must contain only strings, arrays, or objects in value positions',
);
}
}
return references;
}