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jeffmo/mixedExample.js

Last active May 11, 2016 17:49
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mixedExample.js
var a: mixed = foo();
var b: number;
b = a; // error! `a` might not be a number... Could be anything!
if (typeof a === 'number')) {
b = a; // This is safe -- no error
} else {
throw new Error('Unexpected type of `a`!');
}
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