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Add type check for the argument of greenlet #48

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Add type check for the argument of greenlet #48

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6 changes: 6 additions & 0 deletions greenlet.js
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,12 @@
* @public
*/
export default function greenlet(asyncFunction) {
// Type checking the argument.
const type = typeof asyncFunction;
if (type !== 'function') {
throw new TypeError('Expected function but recevied ' + type);
}

// A simple counter is used to generate worker-global unique ID's for RPC:
let currentId = 0;

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