TypeScript supports all JavaScript primitive types plus additional ones:

• string: Text data
• number: Numeric values (integers and floats)
• boolean: True/false values
• null: Intentional absence of value
• undefined: Uninitialized value
• symbol: Unique identifiers
• bigint: Large integers
• void: Absence of return value
• never: Values that never occur
• any: Disables type checking
• unknown: Type-safe alternative to any