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dependency-hash-key.js
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73 lines (58 loc) · 2.64 KB
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const crypto = require('crypto');
const fs = require('fs');
const path = require('path');
/**
* Build a cache key for the dependencies of the monorepo.
* In addition to the content of the yarn.lock file, we also include
* dependencies of all workspace packages in the cache key.
* This ensures that we get a consistent cache key even if a dependency change does not affect
* the yarn.lock file.
*/
function outputDependencyCacheKey() {
const lockfileContent = fs.readFileSync(path.join(process.cwd(), 'yarn.lock'), 'utf8');
const hashParts = [lockfileContent];
const packageJson = require(path.join(process.cwd(), 'package.json'));
const workspacePackages = packageJson.workspaces || [];
// Get the package name (e.g. @sentry/browser) of all workspace packages
// we want to ignore their version numbers later
const workspacePackageNames = getWorkspacePackageNames(workspacePackages);
// Add the dependencies of the workspace itself
hashParts.push(getNormalizedDependencies(packageJson, workspacePackageNames));
// Now for each workspace package, add the dependencies
workspacePackages.forEach(workspace => {
const packageJsonPath = path.join(process.cwd(), workspace, 'package.json');
const packageJson = require(packageJsonPath);
hashParts.push(getNormalizedDependencies(packageJson, workspacePackageNames));
});
const hash = crypto.createHash('md5').update(hashParts.join('\n')).digest('hex');
// We log the output in a way that the GitHub Actions can append it to the output
// We prefix it with `dependencies-` so it is easier to identify in the logs
// eslint-disable-next-line no-console
console.log(`hash=dependencies-${hash}`);
}
function getNormalizedDependencies(packageJson, workspacePackageNames) {
const { dependencies, devDependencies } = packageJson;
const mergedDependencies = {
...devDependencies,
...dependencies,
};
const normalizedDependencies = {};
// Sort the keys to ensure a consistent order
Object.keys(mergedDependencies)
.sort()
.forEach(key => {
// If the dependency is a workspace package, ignore the version
// No need to invalidate a cache after every release
const version = workspacePackageNames.includes(key) ? '**workspace**' : mergedDependencies[key];
normalizedDependencies[key] = version;
});
return JSON.stringify(normalizedDependencies);
}
function getWorkspacePackageNames(workspacePackages) {
return workspacePackages.map(workspace => {
const packageJsonPath = path.join(process.cwd(), workspace, 'package.json');
const packageJson = require(packageJsonPath);
return packageJson.name;
});
}
outputDependencyCacheKey();