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eamonnboyle/AliasedCondition.ts

Created August 27, 2021 10:13
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TS 4.4 - Aliased Condition
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AliasedCondition.ts
const isTextArea = 'rows' in input;
if (isTextArea) {
// Narrowing has NOT taken place
input.rows = 25; // Compiler error
}
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