note:thu_jun_19_2025

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note:thu_jun_19_2025 [2025/06/19 09:38] – root1note:thu_jun_19_2025 [2025/06/19 09:42] (current) – root1
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 ====== The type hierarchy in TypeScript ====== ====== The type hierarchy in TypeScript ======
  
-{{ :note:mermaid-diagram-2025-06-19-173738.png?nolink |}} +{{ :note:screenshot_2025-06-19_at_17.41.18.png |}}
- +
-++++ Mermaid | +
-<code lang=mermaid> +
-%% TypeScript Type Hierarchy Graph +
-graph TD +
-  Top[Top Types] --> Any(any) +
-  Top --> Unknown(unknown) +
- +
-  Primitives[Primitive Types] --> String(string) +
-  Primitives --> Number(number) +
-  Primitives --> Boolean(boolean) +
-  Primitives --> Null(null) +
-  Primitives --> Undefined(undefined) +
-  Primitives --> Symbol(symbol) +
-  Primitives --> BigInt(bigint) +
- +
-  Literals[Literal Types] --> StringLiteral("'hello'") +
-  Literals --> NumberLiteral(42) +
-  Literals --> BooleanLiteral(true) +
- +
-  ObjectTypes[Object Types] --> Object(object) +
-  ObjectTypes --> Interface("{ name: string }") +
-  ObjectTypes --> Class("class Animal {}") +
- +
-  Composite[Composite Types] --> Union("string | number") +
-  Composite --> Intersection("Named & Aged") +
- +
-  Functions[Function Types] --> Function("(x: number) => string") +
-  Functions --> Constructor("new () => Animal") +
- +
-  Arrays[Array/Tuple Types] --> Array("number[]") +
-  Arrays --> Tuple("[string, number]") +
- +
-  Special[Special Types] --> Void(void) +
-  Special --> Never(never) +
-  Special --> Enum("enum Color { Red, Blue }") +
- +
-  Bottom[Bottom Type] --> Never +
- +
-  %% Relationships +
-  Any --> Primitives +
-  Unknown --> Primitives +
-  Primitives --> Literals +
-  ObjectTypes --> Composite +
-  Composite --> Functions +
-  Functions --> Arrays +
-  Arrays --> Special +
-  Special --> Bottom +
-</code> +
- +
-++++ +
  
  
  • note/thu_jun_19_2025.1750325909.txt.gz
  • Last modified: 2025/06/19 09:38
  • by root1