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Fix access to "-1" property on nodesOut array. #6582

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merged 1 commit into from Oct 29, 2017
Merged

Fix access to "-1" property on nodesOut array. #6582

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9 changes: 3 additions & 6 deletions packages/babel-plugin-transform-es2015-destructuring/src/index.js
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Expand Up @@ -519,20 +519,17 @@ export default function({ types: t }) {
}
}

let tail = null;
const nodesOut = [];
for (const node of nodes) {
const tail = nodesOut[nodesOut.length - 1];
if (
tail &&
t.isVariableDeclaration(tail) &&
t.isVariableDeclaration(node)
) {
if (tail !== null && t.isVariableDeclaration(node)) {
// Create a single compound declarations
tail.declarations.push(...node.declarations);
} else {
// Make sure the original node kind is used for each compound declaration
node.kind = nodeKind;
nodesOut.push(node);
tail = t.isVariableDeclaration(node) ? node : null;
}
}

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