99 lines
3.3 KiB
JavaScript
99 lines
3.3 KiB
JavaScript
#!/usr/bin/env node
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import { promises as fs } from "node:fs";
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import path from "node:path";
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import { fileURLToPath } from "node:url";
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const __filename = fileURLToPath(import.meta.url);
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const __dirname = path.dirname(__filename);
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const ROOT_DIR = path.resolve(__dirname, "..");
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const LOCALE_DIR = path.resolve(ROOT_DIR, "src/locales/en");
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const KEY_OUTPUT = path.resolve(ROOT_DIR, "src/types/generated/i18n-keys.ts");
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const RESOURCE_OUTPUT = path.resolve(
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ROOT_DIR,
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"src/types/generated/i18n-resources.ts",
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);
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const isPlainObject = (value) =>
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typeof value === "object" && value !== null && !Array.isArray(value);
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const flattenKeys = (data, prefix = "") => {
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const keys = [];
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for (const [key, value] of Object.entries(data)) {
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const nextPrefix = prefix ? `${prefix}.${key}` : key;
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if (isPlainObject(value)) {
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keys.push(...flattenKeys(value, nextPrefix));
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} else {
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keys.push(nextPrefix);
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}
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}
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return keys;
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};
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const buildType = (data, indent = 0) => {
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if (!isPlainObject(data)) {
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return "string";
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}
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const entries = Object.entries(data).sort(([a], [b]) => a.localeCompare(b));
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const pad = " ".repeat(indent);
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const inner = entries
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.map(([key, value]) => {
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const typeStr = buildType(value, indent + 2);
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return `${" ".repeat(indent + 2)}${JSON.stringify(key)}: ${typeStr};`;
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})
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.join("\n");
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return entries.length
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? `{
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${inner}
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${pad}}`
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: "{}";
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};
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const loadNamespaceJson = async () => {
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const dirents = await fs.readdir(LOCALE_DIR, { withFileTypes: true });
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const namespaces = [];
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for (const dirent of dirents) {
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if (!dirent.isFile() || !dirent.name.endsWith(".json")) continue;
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const name = dirent.name.replace(/\.json$/, "");
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const filePath = path.join(LOCALE_DIR, dirent.name);
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const raw = await fs.readFile(filePath, "utf8");
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const json = JSON.parse(raw);
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namespaces.push({ name, json });
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}
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namespaces.sort((a, b) => a.name.localeCompare(b.name));
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return namespaces;
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};
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const buildKeysFile = (keys) => {
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const arrayLiteral = keys.map((key) => ` "${key}"`).join(",\n");
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return `// This file is auto-generated by scripts/generate-i18n-keys.mjs\n// Do not edit this file manually.\n\nexport const translationKeys = [\n${arrayLiteral}\n] as const;\n\nexport type TranslationKey = typeof translationKeys[number];\n`;
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};
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const buildResourcesFile = (namespaces) => {
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const namespaceEntries = namespaces
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.map(({ name, json }) => {
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const typeStr = buildType(json, 4);
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return ` ${JSON.stringify(name)}: ${typeStr};`;
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})
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.join("\n");
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return `// This file is auto-generated by scripts/generate-i18n-keys.mjs\n// Do not edit this file manually.\n\nexport interface TranslationResources {\n translation: {\n${namespaceEntries}\n };\n}\n`;
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};
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const main = async () => {
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const namespaces = await loadNamespaceJson();
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const keys = namespaces.flatMap(({ name, json }) => flattenKeys(json, name));
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const keysContent = buildKeysFile(keys);
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const resourcesContent = buildResourcesFile(namespaces);
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await fs.mkdir(path.dirname(KEY_OUTPUT), { recursive: true });
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await fs.writeFile(KEY_OUTPUT, keysContent, "utf8");
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await fs.writeFile(RESOURCE_OUTPUT, resourcesContent, "utf8");
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console.log(`Generated ${keys.length} translation keys.`);
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};
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main().catch((error) => {
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console.error("Failed to generate i18n metadata:", error);
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process.exitCode = 1;
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});
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