first commit

resources/scripts/extract-translations.js

@@ -0,0 +1,88 @@
+const glob = require('fast-glob');
+const path = require('path');
+const fse = require('fs-extra');
+const ts = require('typescript');
+
+const TARGET_DIR = path.resolve(__dirname, '../client-translations.json');
+
+const messages = new Set();
+
+const parseTree = node => {
+  // message('some message');
+  if (
+    node.kind === ts.SyntaxKind.CallExpression &&
+    node.expression.escapedText === 'message' &&
+    node.arguments[0].kind === ts.SyntaxKind.StringLiteral
+  ) {
+    messages.add(node.arguments[0].text);
+  }
+
+  // <Trans/> will always be self-closing
+  if (
+    node.kind === ts.SyntaxKind.JsxSelfClosingElement &&
+    node.tagName.escapedText === 'Trans'
+  ) {
+    node.attributes.properties.forEach(prop => {
+      // ignore spread attributes
+      if (
+        prop.kind === ts.SyntaxKind.JsxAttribute &&
+        prop.name.escapedText === 'message'
+      ) {
+        // message="string"
+        if (prop.initializer.text) {
+          messages.add(prop.initializer.text);
+
+          // message={'string "one"'}
+        } else if (
+          prop.initializer.expression &&
+          prop.initializer.expression.kind === ts.SyntaxKind.StringLiteral
+        ) {
+          messages.add(prop.initializer.expression.text);
+        }
+      }
+    });
+  }
+
+  // trans({message: 'string'})
+  if (
+    node.kind === ts.SyntaxKind.CallExpression &&
+    node.expression.escapedText === 'trans' &&
+    node.arguments[0].kind === ts.SyntaxKind.ObjectLiteralExpression
+  ) {
+    node.arguments[0].properties.forEach(prop => {
+      if (prop.name.escapedText === 'message') {
+        messages.add(prop.initializer.text);
+      }
+    });
+  }
+
+  node.forEachChild(parseTree);
+};
+
+async function run() {
+  const files = await glob([
+    'resources/client/**/*.{tsx,ts}',
+    'common/resources/client/**/*.{tsx,ts}',
+  ]);
+  files.map(filename => {
+    const content = fse.readFileSync(filename).toString();
+    const sourceFile = ts.createSourceFile(
+      filename,
+      content,
+      ts.ScriptTarget.Latest
+    );
+    parseTree(sourceFile);
+  });
+
+  const messagesObj = {};
+
+  messages.forEach(message => {
+    messagesObj[message] = message;
+  });
+
+  const json = JSON.stringify(messagesObj);
+
+  fse.writeFile(TARGET_DIR, json);
+}
+
+run();