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prashaantt/non-nullable.ts

Created December 2, 2016 09:38
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non-nullable.ts
let s1: string;
s1 = "some string";
s1 = undefined; // Type 'undefined' is not assignable to type 'string'
s1 = null; // Type 'null' is not assignable to type 'string'
let s2: string | undefined;
s2 = "another string";
s2 = undefined;
s2 = null; // Type 'null' is not assignable to type 'string | undefined'
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