set: mark unchanged parameters as ReadonlySet

CHANGELOG.md

@@ -6,6 +6,7 @@
 * Fixing `Set` operations CommonJS named export collision by renaming it to `set` (@jerome-benoit).
 * Fixing missing `Uint8Vector`, `Uint8ClampedVector`, `Int8Vector`, `Uint16Vector`, `Int16Vector`, `Uint32Vector`, `Int32Vector`, `Float32Vector`, `Float64Vector`, `PointerVector` CommonJS named exports (@jerome-benoit).
 * Fixing missing `PointerVector` TS exports (@jerome-benoit).
+* Marking unchanged parameters as `ReadonlySet` in `set` operations (@yoursunny).
 
 ## 0.39.8
 

set.d.ts

@@ -2,17 +2,17 @@
  * Mnemonist Set Typings
  * ======================
  */
-export function intersection<T>(...set: Array<Set<T>>): Set<T>;
-export function union<T>(...set: Array<Set<T>>): Set<T>;
-export function difference<T>(a: Set<T>, b: Set<T>): Set<T>;
-export function symmetricDifference<T>(a: Set<T>, b: Set<T>): Set<T>;
-export function isSubset<T>(a: Set<T>, b: Set<T>): boolean;
-export function isSuperset<T>(a: Set<T>, b: Set<T>): boolean;
-export function add<T>(a: Set<T>, b: Set<T>): void;
-export function subtract<T>(a: Set<T>, b: Set<T>): void;
-export function intersect<T>(a: Set<T>, b: Set<T>): void;
-export function disjunct<T>(a: Set<T>, b: Set<T>): void;
-export function intersectionSize<T>(a: Set<T>, b: Set<T>): number;
-export function unionSize<T>(a: Set<T>, b: Set<T>): number;
-export function jaccard<T>(a: Set<T>, b: Set<T>): number;
-export function overlap<T>(a: Set<T>, b: Set<T>): number;
+export function intersection<T>(a: ReadonlySet<T>, b: ReadonlySet<T>, ...rest: Array<ReadonlySet<T>>): Set<T>;
+export function union<T>(a: ReadonlySet<T>, b: ReadonlySet<T>, ...rest: Array<ReadonlySet<T>>): Set<T>;
+export function difference<T>(a: ReadonlySet<T>, b: ReadonlySet<T>): Set<T>;
+export function symmetricDifference<T>(a: ReadonlySet<T>, b: ReadonlySet<T>): Set<T>;
+export function isSubset<T>(a: ReadonlySet<T>, b: ReadonlySet<T>): boolean;
+export function isSuperset<T>(a: ReadonlySet<T>, b: ReadonlySet<T>): boolean;
+export function add<T>(a: Set<T>, b: ReadonlySet<T>): void;
+export function subtract<T>(a: Set<T>, b: ReadonlySet<T>): void;
+export function intersect<T>(a: Set<T>, b: ReadonlySet<T>): void;
+export function disjunct<T>(a: Set<T>, b: ReadonlySet<T>): void;
+export function intersectionSize<T>(a: ReadonlySet<T>, b: ReadonlySet<T>): number;
+export function unionSize<T>(a: ReadonlySet<T>, b: ReadonlySet<T>): number;
+export function jaccard<T>(a: ReadonlySet<T>, b: ReadonlySet<T>): number;
+export function overlap<T>(a: ReadonlySet<T>, b: ReadonlySet<T>): number;