feat(client): type guards for IPactDecimal and IPactInt

packages/libs/client/etc/client.api.md

@@ -14,6 +14,8 @@ import type { IExecPayload } from '@kadena/types';
 import { IKeyPair } from '@kadena/types';
 import type { ILocalCommandResult } from '@kadena/chainweb-node-client';
 import type { ILocalOptions } from '@kadena/chainweb-node-client';
+import { IPactDecimal } from '@kadena/types';
+import { IPactInt } from '@kadena/types';
 import { IPollResponse } from '@kadena/chainweb-node-client';
 import { IPreflightResult } from '@kadena/chainweb-node-client';
 import type { ISigningCap } from '@kadena/types';
@@ -439,6 +441,12 @@ export interface ISingleSignFunction {
     (transaction: IUnsignedCommand): Promise<ICommand | IUnsignedCommand>;
 }
 
+// @public (undocumented)
+export const isIPactDecimal: (arg: unknown) => arg is IPactDecimal;
+
+// @public (undocumented)
+export const isIPactInt: (arg: unknown) => arg is IPactInt;
+
 // @public
 export function isSignedTransaction(command: IUnsignedCommand | ICommand): command is ICommand;
 

packages/libs/client/src/index.ts

@@ -14,6 +14,8 @@ export { Pact } from './pact';
 export type * from './interfaces/IPactCommand';
 export type * from './interfaces/ISigningRequest';
 
+export { isIPactDecimal, isIPactInt } from './utils/type-guards';
+
 export {
   ClientRequestInit,
   ICommandResult,

packages/libs/client/src/utils/tests/type-guards.test.ts

@@ -0,0 +1,43 @@
+import { describe, expect, it } from 'vitest';
+import { hasField, isIPactDecimal, isIPactInt, isObject } from '../type-guards';
+
+describe('isObject', () => {
+  it('returns true for object', () => {
+    expect(isObject({})).toBe(true);
+  });
+  it('returns false for null', () => {
+    expect(isObject(null)).toBe(false);
+  });
+  it('returns false for non-object types', () => {
+    [1, 'hello', true, undefined, Symbol('test')].forEach((item) =>
+      expect(isObject(item)).toBe(false),
+    );
+  });
+});
+
+describe('hasField', () => {
+  it('returns true if object has the filed', () => {
+    expect(hasField({ test: '1' }, 'test')).toBe(true);
+  });
+  it('returns false if object does not has the filed', () => {
+    expect(hasField({ one: '1' }, 'two')).toBe(false);
+  });
+});
+
+describe('isIPactDecimal', () => {
+  it('returns true for IPactDecimal', () => {
+    expect(isIPactDecimal({ decimal: '1' })).toBe(true);
+  });
+  it('returns false for non-IPactDecimal', () => {
+    expect(isIPactDecimal({ int: '1' })).toBe(false);
+  });
+});
+
+describe('isIPactInt', () => {
+  it('returns true for IPactInt', () => {
+    expect(isIPactInt({ int: '1' })).toBe(true);
+  });
+  it('returns false for non-IPactInt', () => {
+    expect(isIPactInt({ decimal: '1' })).toBe(false);
+  });
+});

packages/libs/client/src/utils/type-guards.ts

@@ -0,0 +1,15 @@
+import { IPactDecimal, IPactInt } from "@kadena/types";
+
+export const isObject = (obj: unknown): obj is Record<string, unknown> => {
+  return typeof obj === "object" && obj !== null;
+}
+
+export const hasField = <T extends string>(obj: Record<string, unknown>, field: T): obj is Record<T, unknown> => {
+  return field in obj;
+}
+
+export const isIPactDecimal = (arg: unknown): arg is IPactDecimal =>
+  isObject(arg) && hasField(arg, "decimal") && typeof arg.decimal === "string";
+
+export const isIPactInt = (arg: unknown): arg is IPactInt =>
+  isObject(arg) && hasField(arg, "int") && typeof arg.int === "string";