@expo/metro-config
Version:
A Metro config for running React Native projects with the Metro bundler
91 lines • 3.64 kB
JavaScript
;
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.getWatchFolders = exports.resolveAllWorkspacePackageJsonPaths = exports.globAllPackageJsonPaths = void 0;
const paths_1 = require("@expo/config/paths");
const fs_1 = __importDefault(require("fs"));
const glob_1 = require("glob");
const path_1 = __importDefault(require("path"));
function readJsonFile(filePath) {
// Read with fs
const file = fs_1.default.readFileSync(filePath, 'utf8');
// Parse with JSON.parse
return JSON.parse(file);
}
function isValidJsonFile(filePath) {
try {
// Throws if invalid or unable to read.
readJsonFile(filePath);
return true;
}
catch {
return false;
}
}
/**
* @param workspaceProjectRoot Root file path for the yarn workspace
* @param linkedPackages List of folders that contain linked node modules, ex: `['packages/*', 'apps/*']`
* @returns List of valid package.json file paths, ex: `['/Users/me/app/apps/my-app/package.json', '/Users/me/app/packages/my-package/package.json']`
*/
function globAllPackageJsonPaths(workspaceProjectRoot, linkedPackages) {
return linkedPackages
.map((glob) => {
// Globs should only contain `/` as separator, even on Windows.
return (0, glob_1.globSync)(path_1.default.posix.join(glob, 'package.json').replace(/\\/g, '/'), {
cwd: workspaceProjectRoot,
absolute: true,
ignore: ['**/@(Carthage|Pods|node_modules)/**'],
}).map((pkgPath) => {
return isValidJsonFile(pkgPath) ? pkgPath : null;
});
})
.flat()
.filter(Boolean)
.map((p) => path_1.default.join(p));
}
exports.globAllPackageJsonPaths = globAllPackageJsonPaths;
/**
* @param workspaceProjectRoot root file path for a yarn workspace.
* @returns list of package.json file paths that are linked to the yarn workspace.
*/
function resolveAllWorkspacePackageJsonPaths(workspaceProjectRoot) {
try {
// Extract the "packages" array or use "workspaces" as packages array (yarn workspaces spec).
const workspaceGlobs = (0, paths_1.getMetroWorkspaceGlobs)(workspaceProjectRoot);
if (!workspaceGlobs?.length)
return [];
// Glob all package.json files and return valid paths.
return globAllPackageJsonPaths(workspaceProjectRoot, workspaceGlobs);
}
catch {
return [];
}
}
exports.resolveAllWorkspacePackageJsonPaths = resolveAllWorkspacePackageJsonPaths;
/**
* @param projectRoot file path to app's project root
* @returns list of node module paths to watch in Metro bundler, ex: `['/Users/me/app/node_modules/', '/Users/me/app/apps/my-app/', '/Users/me/app/packages/my-package/']`
*/
function getWatchFolders(projectRoot) {
const resolvedProjectRoot = path_1.default.resolve(projectRoot);
const workspaceRoot = (0, paths_1.getMetroServerRoot)(resolvedProjectRoot);
// Rely on default behavior in standard projects.
if (workspaceRoot === resolvedProjectRoot) {
return [];
}
const packages = resolveAllWorkspacePackageJsonPaths(workspaceRoot);
if (!packages?.length) {
return [];
}
return uniqueItems([
path_1.default.join(workspaceRoot, 'node_modules'),
...packages.map((pkg) => path_1.default.dirname(pkg)),
]);
}
exports.getWatchFolders = getWatchFolders;
function uniqueItems(items) {
return [...new Set(items)];
}
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