JSTypeChecker

A JS Type Checker with protection levels.

Diagram

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Properties

This class exposes no public properties.

Methods

.setProtectionLevel(level: ProtectionLevel)

Argument	Type	Description
level	ProtectionLevel	Set validation strictness.

.getProtectionLevel()

Returns the current ProtectionLevel.

.for(args: unknown[])

Argument	Type	Description
args	unknown[]	Values to validate.

Returns an object with:

{
  check: (types: JSTypeOrArray[]) => boolean;
}

References

• JSTypeOrArray

.addCustomHandler(name: string, handler: (value: unknown) => boolean)

Argument	Type	Description
name	string	Handler name.
handler	(value: unknown) => boolean	Type-check function.

Registers a custom type handler.

Example

const checker = new JSTypeChecker();
checker.setProtectionLevel("boundary");
checker.addCustomHandler("positiveNumber", (value) => typeof value === "number" && value > 0);
const isValid = checker.for([42]).check(["positiveNumber"]); // true