Fix: do not fail on JSX spread attribute in Trans component

src/lexers/jsx-lexer.js

@@ -64,9 +64,9 @@ export default class JsxLexer extends JavascriptLexer {
   jsxExtractor(node, sourceText) {
     const tagNode = node.openingElement || node
 
-    const getPropValue = (node, tagName) => {
+    const getPropValue = (node, attributeName) => {
       const attribute = node.attributes.properties.find(
-        (attr) => attr.name.text === tagName
+        (attr) => attr.name !== undefined && attr.name.text === attributeName
       )
       if (!attribute) {
         return undefined
@@ -109,6 +109,14 @@ export default class JsxLexer extends JavascriptLexer {
       }
 
       tagNode.attributes.properties.forEach((property) => {
+        if (property.kind === ts.SyntaxKind.JsxSpreadAttribute) {
+          this.emit(
+            'warning',
+            `Component attribute is a JSX spread attribute : ${property.expression.text}`
+          )
+          return
+        }
+
         if (this.omitAttributes.includes(property.name.text)) {
           return
         }

test/lexers/jsx-lexer.test.js

@@ -221,6 +221,19 @@ describe('JsxLexer', () => {
       ])
       done()
     })
+
+    it('emits a `warning` event if the component attribute is a JSX spread attribute', (done) => {
+      const Lexer = new JsxLexer()
+      const content = '<Trans defaults="bar" {...spread} />'
+      Lexer.on('warning', (message) => {
+        assert.equal(
+          message,
+          'Component attribute is a JSX spread attribute : spread'
+        )
+        done()
+      })
+      assert.deepEqual(Lexer.extract(content), [{ defaultValue: 'bar' }])
+    })
   })
 
   describe('supports TypeScript', () => {