feat: Increase robustness of FUEL_NETWORK_URL config (#1379)

* test: add testcases for wallet config network url export

* chore: changeset

* feat: increase robustness of fuel network url config

.changeset/strange-lions-warn.md

@@ -0,0 +1,2 @@
+---
+---

packages/wallet/src/configs.test.ts

@@ -0,0 +1,52 @@
+describe('Configs', () => {
+  it('exports FUEL_NETWORK_URL', async () => {
+    const configs = await import('./configs');
+    expect(configs.FUEL_NETWORK_URL).toBe('http://127.0.0.1:4000/graphql');
+  });
+});
+
+describe('Configs - undefined process', () => {
+  const originalProcess = process;
+
+  beforeEach(() => {
+    jest.resetModules();
+
+    // @ts-expect-error - test to assert undefined process
+    // eslint-disable-next-line no-global-assign
+    process = undefined;
+  });
+
+  afterEach(() => {
+    // eslint-disable-next-line no-global-assign
+    process = originalProcess;
+  });
+
+  it('exports FUEL_NETWORK_URL with undefined process', async () => {
+    expect(typeof process).toBe('undefined');
+    expect(process).toBeUndefined();
+
+    const configs = await import('./configs');
+
+    expect(configs.FUEL_NETWORK_URL).toBe('http://127.0.0.1:4000/graphql');
+  });
+});
+
+describe('Configs - overridden env', () => {
+  const originalEnv = process.env;
+
+  beforeEach(() => {
+    jest.resetModules();
+
+    process.env = { ...originalEnv, FUEL_NETWORK_URL: 'some-other-network-url' };
+  });
+
+  afterEach(() => {
+    process.env = originalEnv;
+  });
+
+  it('exports FUEL_NETWORK_URL with overridden env', async () => {
+    const configs = await import('./configs');
+
+    expect(configs.FUEL_NETWORK_URL).toBe('some-other-network-url');
+  });
+});

packages/wallet/src/configs.ts

@@ -1 +1,4 @@
-export const FUEL_NETWORK_URL = process?.env?.FUEL_NETWORK_URL || 'http://127.0.0.1:4000/graphql';
+export const FUEL_NETWORK_URL =
+  typeof process !== 'undefined'
+    ? process?.env?.FUEL_NETWORK_URL || 'http://127.0.0.1:4000/graphql'
+    : 'http://127.0.0.1:4000/graphql';