基础类型
boolean
let isDone: boolean = false;number
let decLiteral: number = 6;
let hexLiteral: number = 0xf00d;
let binaryLiteral: number = 0b1010;
let octalLiteral: number = 0o744;string
let name: string = "bob";
name = "smith";[ ] 与数组泛型
let list: number[] = [1, 2, 3];
let list: Array<number> = [1, 2, 3];元组 Tuple
枚举 enum
Any
Void
undefined & null
never
object
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