gnome-shell/.gitlab-ci/run-eslint

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#!/usr/bin/env node
const { ESLint } = require('eslint');
const fs = require('fs');
const path = require('path');
const { spawn } = require('child_process');
function createConfig(config) {
const options = {
cache: true,
cacheLocation: `.eslintcache-${config}`,
};
if (config === 'legacy')
options.overrideConfigFile='lint/eslintrc-legacy.yml';
return new ESLint(options);
}
function git(...args) {
const git = spawn('git', args, { stdio: ['ignore', null, 'ignore'] });
git.stdout.setEncoding('utf8');
return new Promise(resolve => {
let out = '';
git.stdout.on('data', chunk => out += chunk);
git.stdout.on('end', () => resolve(out.trim()));
});
}
function createCommon(report1, report2, ignoreColumn=false) {
return report1.map(result => {
const { filePath, messages } = result;
const match =
report2.find(r => r.filePath === filePath) || { messages: [] };
const filteredMessages = messages.filter(
msg => match.messages.some(
m => m.line === msg.line && (ignoreColumn || m.column === msg.column)));
const [errorCount, warningCount] = filteredMessages.reduce(
([e, w], msg) => {
return [
e + Number(msg.severity === 2),
w + Number(msg.severity === 1)];
}, [0, 0]);
return {
filePath,
messages: filteredMessages,
errorCount,
warningCount,
};
});
}
async function getMergeRequestChanges(remote, branch) {
await git('fetch', remote, branch);
const branchPoint = await git('merge-base', 'HEAD', 'FETCH_HEAD');
const diff = await git('diff', '-U0', `${branchPoint}...HEAD`);
const report = [];
let messages = null;
for (const line of diff.split('\n')) {
if (line.startsWith('+++ b/')) {
const filePath = path.resolve(line.substring(6));
messages = filePath.endsWith('.js') ? [] : null;
if (messages)
report.push({ filePath, messages });
} else if (messages && line.startsWith('@@ ')) {
[, , changes] = line.split(' ');
[start, count] = `${changes},1`.split(',').map(i => parseInt(i));
for (let i = start; i < start + count; i++)
messages.push({ line: i });
}
}
return report;
}
function getOption(...names) {
const optIndex =
process.argv.findIndex(arg => names.includes(arg)) + 1;
if (optIndex === 0)
return undefined;
return process.argv[optIndex];
}
(async function main() {
const outputOption = getOption('--output-file', '-o');
const outputPath = outputOption ? path.resolve(outputOption) : null;
const sourceDir = path.dirname(process.argv[1]);
process.chdir(path.resolve(sourceDir, '..'));
const remote = getOption('--remote') || 'origin';
const branch = getOption('--branch', '-b');
const sources = ['js', 'subprojects/extensions-app/js'];
const regular = createConfig('regular');
const ops = [];
ops.push(regular.lintFiles(sources));
if (branch)
ops.push(getMergeRequestChanges(remote, branch));
else
ops.push(createConfig('legacy').lintFiles(sources));
const results = await Promise.all(ops);
const commonResults = createCommon(...results, branch !== undefined);
const formatter = await regular.loadFormatter();
const resultText = formatter.format(commonResults);
if (outputPath) {
fs.mkdirSync(path.dirname(outputPath), { recursive: true });
fs.writeFileSync(outputPath, resultText);
} else {
console.log(resultText);
}
process.exitCode = commonResults.some(r => r.errorCount > 0) ? 1 : 0;
})().catch((error) => {
process.exitCode = 1;
console.error(error);
});