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Guard against empty loc

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This commit is contained in:
Alex Kotliarskyi 2016-01-19 20:59:42 -08:00
parent 9f76cf7c42
commit 1643592342
1 changed files with 5 additions and 3 deletions
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8
packages/babel-plugin-transform-react-jsx-source/src/index.js
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@ -42,9 +42,11 @@ export default function ({ types: t }) {
JSXOpeningElement(node) {
const id = t.jSXIdentifier(TRACE_ID);
const trace = makeTrace(node.container.openingElement.loc.start.line);
node.container.openingElement.attributes.push(t.jSXAttribute(id, t.jSXExpressionContainer(trace)));
const location = node.container.openingElement.loc; // undefined for generated elements
if (location) {
const trace = makeTrace(location.start.line);
node.container.openingElement.attributes.push(t.jSXAttribute(id, t.jSXExpressionContainer(trace)));
}
}
};