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TypeScript Type for One-dimensional Array

// zipcodes is an array of strings let zipcodes: string[] = ['03255', '02134', '08002', '03063']; // Pushing a number to zipcodes will generate an error // Error: Argument of type 'number' is not assignable to parameter of type 'string'. zipcodes.push(90210);

The type annotation for a one-dimensional array in TypeScript is similar to a primitive data type, except we add a [] after the type.

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