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Parsing error when default export involves Array.concat #1941

jonboiser opened this Issue Jun 15, 2018 · 0 comments


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jonboiser commented Jun 15, 2018

Steps to reproduce

// okay
export default [,]

// not okay
export default [].concat(foo)

The bottom example is how the Buble compiler transforms something like [].


Expected output

Successful parse for the bottom example.

Actual output

Error: Line 5: Unexpected token .

Relevant references

Comparison with acorn on AST Explorer

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