chore: improve node incompatibility warning (#2925)

.changeset/many-paws-exercise.md

@@ -0,0 +1,5 @@
+---
+"@fuel-ts/account": patch
+---
+
+chore: improve node incompatibility warning

packages/account/src/providers/provider.test.ts

@@ -949,6 +949,50 @@ Supported fuel-core version: ${mock.supportedVersion}.`
     );
   });
 
+  it('should ensure fuel node version warning is shown before chain incompatibility error', async () => {
+    const { FUEL_CORE } = versions;
+    const [major, minor, patch] = FUEL_CORE.split('.');
+    const majorMismatch = major === '0' ? 1 : parseInt(patch, 10) - 1;
+
+    const mock = {
+      isMajorSupported: false,
+      isMinorSupported: true,
+      isPatchSupported: true,
+      supportedVersion: `${majorMismatch}.${minor}.${patch}`,
+    };
+
+    if (mock.supportedVersion === FUEL_CORE) {
+      throw new Error();
+    }
+
+    const spy = vi.spyOn(fuelTsVersionsMod, 'checkFuelCoreVersionCompatibility');
+    spy.mockImplementationOnce(() => mock);
+
+    const consoleWarnSpy = vi.spyOn(console, 'warn');
+
+    const graphQLDummyError = `Unknown field "height" on type "Block".
+      Unknown field "version" on type "ScriptParameters".
+      Unknown field "version" on type "ConsensusParameters".`;
+
+    const fuelError = new FuelError(ErrorCode.INVALID_REQUEST, graphQLDummyError);
+
+    const fetchChainSpy = vi
+      .spyOn(Provider.prototype, 'fetchChain')
+      .mockImplementationOnce(async () => Promise.reject(fuelError));
+
+    await expectToThrowFuelError(() => setupTestProviderAndWallets(), fuelError);
+
+    expect(consoleWarnSpy).toHaveBeenCalledOnce();
+    expect(consoleWarnSpy).toHaveBeenCalledWith(
+      `The Fuel Node that you are trying to connect to is using fuel-core version ${FUEL_CORE},
+which is not supported by the version of the TS SDK that you are using.
+Things may not work as expected.
+Supported fuel-core version: ${mock.supportedVersion}.`
+    );
+
+    expect(fetchChainSpy).toHaveBeenCalledOnce();
+  });
+
   it('An invalid subscription request throws a FuelError and does not hold the test runner (closes all handles)', async () => {
     using launched = await setupTestProviderAndWallets();
     const { provider } = launched;

packages/account/src/providers/provider.ts

@@ -535,10 +535,9 @@ export default class Provider {
    * @returns A promise that resolves to the Chain and NodeInfo.
    */
   async fetchChainAndNodeInfo() {
-    const chain = await this.fetchChain();
     const nodeInfo = await this.fetchNode();
-
     Provider.ensureClientVersionIsSupported(nodeInfo);
+    const chain = await this.fetchChain();
 
     return {
       chain,