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const fs = require('fs');
const diff = require('diff');
const globby = require('globby');
const GLOBS = ['**/*.ts', '**/*.tsx', '!node_modules/**/*', '!build/**/*'];
let header;
return readFile('./HEADER')
.then(h => {
header = h;
})
.then(() => globby(GLOBS))
.then(readFilesFromPaths)
.then(checkFiles)
.then(errors => {
if (errors) {
console.error(errors, 'files have an invalid license header');
process.exit(1);
} else {
console.log('✓ All files have valid license headers');
}
})
.catch(e => {
console.error(e);
process.exit(1);
});
function checkFiles(files) {
return files.reduce((errors, { path, text }) => {
if (text.slice(0, header.length) !== header) {
console.error('❌ ', path);
console.error(
diff.createPatch(path, header + '\n', text.slice(0, header.length) + '\n', '', '')
);
return errors + 1;
}
return errors;
}, 0);
}
function readFilesFromPaths(paths) {
return Promise.all(paths.map(path => readFile(path).then(text => ({ path, text }))));
}
function readFile(path) {
return new Promise((resolve, reject) => {
fs.readFile(path, { encoding: 'utf-8' }, (err, text) => {
if (err) {
reject(err);
} else {
resolve(text);
}
});
});
}
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