[Bug]: Destructuring empty array with invalid Symbol.iterator #15154
Description
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- Would you like to work on a fix?
How are you using Babel?
Other (Next.js, Gatsby, vue-cli, ...)
Input code
var [ ] = { [ Symbol . iterator ] : ( ) => [ ] } ;Configuration file name
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Configuration
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Current and expected behavior
In input.js, Symbol.iterator is lazily evaluated so input.js is terminated without error.
On the other hand, Array.from(iter) in output.js eagerly throws TypeError:
$ node input.js # no error
$ node output.js
output.js:48
return Array.from(iter);
^
TypeError: undefined is not a function
at Function.from (<anonymous>)
at _iterableToArray (output.js:48:18)
at _toArray (output.js:17:5)
at Object.<anonymous> (output.js:56:23)
at Module._compile (node:internal/modules/cjs/loader:1159:14)
at Module._extensions..js (node:internal/modules/cjs/loader:1213:10)
at Module.load (node:internal/modules/cjs/loader:1037:32)
at Module._load (node:internal/modules/cjs/loader:878:12)
at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:81:12)
at node:internal/main/run_main_module:23:47
Node.js v18.11.0Environment
Reproduction on Babel's own REPL
Possible solution
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Additional context
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