Require triple equals via eslint

.eslintrc.json

@@ -34,6 +34,7 @@
   "plugins": ["@typescript-eslint", "require-extensions"],
   "rules": {
     "no-console": "error",
+    "eqeqeq": "error",
     "@typescript-eslint/consistent-type-imports": "error",
     "@typescript-eslint/consistent-type-exports": "error",
     "@typescript-eslint/restrict-template-expressions": [

packages/restate-e2e-services/src/non_determinism.ts

@@ -21,7 +21,7 @@ const invocationCounts = new Map<string, number>();
 function doLeftAction(ctx: restate.ObjectContext): boolean {
   const newValue = (invocationCounts.get(ctx.key) ?? 0) + 1;
   invocationCounts.set(ctx.key, newValue);
-  return newValue % 2 == 1;
+  return newValue % 2 === 1;
 }
 
 function incrementCounter(ctx: restate.ObjectContext) {

packages/restate-e2e-services/src/workflow.ts

@@ -18,7 +18,7 @@ const wf = restate.workflow({
 
       const output = await ctx.promise("p");
 
-      if (ctx.promise("p").peek() == undefined) {
+      if (ctx.promise("p").peek() === undefined) {
         throw new restate.TerminalError("Durable promise should be completed");
       }
 

packages/restate-sdk-clients/src/ingress.ts

@@ -318,7 +318,7 @@ class HttpIngress implements Ingress {
           result,
         };
       } catch (e) {
-        if (!(e instanceof HttpCallError) || e.status != 470) {
+        if (!(e instanceof HttpCallError) || e.status !== 470) {
           throw e;
         }
         return {
@@ -335,11 +335,11 @@ class HttpIngress implements Ingress {
       {
         get: (_target, prop) => {
           const handler = prop as string;
-          if (handler == "workflowSubmit") {
+          if (handler === "workflowSubmit") {
             return workflowSubmit;
-          } else if (handler == "workflowAttach") {
+          } else if (handler === "workflowAttach") {
             return workflowAttach;
-          } else if (handler == "workflowOutput") {
+          } else if (handler === "workflowOutput") {
             return workflowOutput;
           }
           // shared handlers pass trough via the ingress's normal invocation form

packages/restate-sdk-core/src/serde_api.ts

@@ -32,7 +32,7 @@ class JsonSerde<T> implements Serde<T | undefined> {
   }
 
   deserialize(data: Uint8Array): T | undefined {
-    if (data.length == 0) {
+    if (data.length === 0) {
       return undefined;
     }
     return JSON.parse(new TextDecoder().decode(data)) as T;
@@ -62,7 +62,7 @@ class VoidSerde implements Serde<void> {
   }
 
   deserialize(data: Uint8Array): void {
-    if (data.length != 0) {
+    if (data.length !== 0) {
       throw new Error("Expected empty data");
     }
   }

packages/restate-sdk/src/context.ts

@@ -606,7 +606,7 @@ export const CombineablePromise = {
   all<T extends readonly CombineablePromise<unknown>[] | []>(
     values: T
   ): Promise<{ -readonly [P in keyof T]: Awaited<T[P]> }> {
-    if (values.length == 0) {
+    if (values.length === 0) {
       return Promise.all(values);
     }
     return ContextImpl.createCombinator("All", values) as Promise<{
@@ -626,7 +626,7 @@ export const CombineablePromise = {
   race<T extends readonly CombineablePromise<unknown>[] | []>(
     values: T
   ): Promise<Awaited<T[number]>> {
-    if (values.length == 0) {
+    if (values.length === 0) {
       return Promise.race(values);
     }
     return ContextImpl.createCombinator("Race", values) as Promise<
@@ -647,7 +647,7 @@ export const CombineablePromise = {
   any<T extends readonly CombineablePromise<unknown>[] | []>(
     values: T
   ): Promise<Awaited<T[number]>> {
-    if (values.length == 0) {
+    if (values.length === 0) {
       return Promise.any(values);
     }
     return ContextImpl.createCombinator("Any", values) as Promise<
@@ -669,7 +669,7 @@ export const CombineablePromise = {
   ): Promise<{
     -readonly [P in keyof T]: PromiseSettledResult<Awaited<T[P]>>;
   }> {
-    if (values.length == 0) {
+    if (values.length === 0) {
       return Promise.allSettled(values);
     }
     return ContextImpl.createCombinator("AllSettled", values) as Promise<{

packages/restate-sdk/src/context_impl.ts

@@ -99,7 +99,7 @@ export class ContextImpl implements ObjectContext, WorkflowContext {
       }, new Map()),
       attemptHeaders: Object.entries(attemptHeaders).reduce(
         (headers, [key, value]) => {
-          if (value != undefined) {
+          if (value !== undefined) {
             headers.set(key, value instanceof Array ? value[0] : value);
           }
           return headers;
@@ -139,7 +139,7 @@ export class ContextImpl implements ObjectContext, WorkflowContext {
     return this.processCompletableEntry(
       (vm) => vm.sys_get_state(name),
       (asyncResultValue) => {
-        if (asyncResultValue == "Empty") {
+        if (asyncResultValue === "Empty") {
           // Empty
           return null;
         } else if ("Success" in asyncResultValue) {
@@ -244,7 +244,7 @@ export class ContextImpl implements ObjectContext, WorkflowContext {
       const parameter = requestSerde.serialize(send.parameter);
 
       let delay;
-      if (send.delay != undefined) {
+      if (send.delay !== undefined) {
         delay = BigInt(send.delay);
       }
 
@@ -358,7 +358,7 @@ export class ContextImpl implements ObjectContext, WorkflowContext {
       // Record the result/failure, get back the handle for the ack.
       let handle;
       try {
-        if (err != undefined) {
+        if (err !== undefined) {
           if (err instanceof TerminalError) {
             // Record failure, go ahead
             handle = this.coreVm.sys_run_exit_failure({
@@ -409,7 +409,7 @@ export class ContextImpl implements ObjectContext, WorkflowContext {
     return this.processCompletableEntry(
       (vm) => vm.sys_sleep(BigInt(millis)),
       (asyncResultValue) => {
-        if (asyncResultValue == "Empty") {
+        if (asyncResultValue === "Empty") {
           // Empty
           return undefined as void;
         } else if ("Failure" in asyncResultValue) {
@@ -453,7 +453,7 @@ export class ContextImpl implements ObjectContext, WorkflowContext {
             if (!serde) {
               return defaultSerde<T>().deserialize(asyncResultValue.Success);
             }
-            if (asyncResultValue.Success.length == 0) {
+            if (asyncResultValue.Success.length === 0) {
               return undefined as T;
             }
             return serde.deserialize(asyncResultValue.Success);
@@ -482,10 +482,10 @@ export class ContextImpl implements ObjectContext, WorkflowContext {
 
       if (serde) {
         value =
-          payload == undefined ? new Uint8Array() : serde.serialize(payload);
+          payload === undefined ? new Uint8Array() : serde.serialize(payload);
       } else {
         value =
-          payload != undefined
+          payload !== undefined
             ? defaultSerde().serialize(payload)
             : defaultSerde().serialize(null);
       }
@@ -634,7 +634,7 @@ export class ContextImpl implements ObjectContext, WorkflowContext {
           return promisesMap.get(handlesResult[0]);
         case "OrTimeout":
           // The sleep promise is always the second one in the list.
-          if (handlesResult[0] == castedPromises[1].asyncResultHandle) {
+          if (handlesResult[0] === castedPromises[1].asyncResultHandle) {
             return Promise.reject(new TimeoutError());
           } else {
             return promisesMap.get(handlesResult[0]);
@@ -751,7 +751,7 @@ export class ContextImpl implements ObjectContext, WorkflowContext {
 
       // Now loop waiting for the async result
       let asyncResult = this.coreVm.take_async_result(handle);
-      while (asyncResult == "NotReady") {
+      while (asyncResult === "NotReady") {
         await this.awaitNextRead();
         // Using notify_await_point immediately before take_async_result
         // makes sure the state machine will try to suspend only now,
@@ -776,7 +776,7 @@ export class ContextImpl implements ObjectContext, WorkflowContext {
   // and will notify the caller that a read was executed
   // and the result was piped in the state machine.
   private awaitNextRead(): Promise<void> {
-    if (this.currentRead == undefined) {
+    if (this.currentRead === undefined) {
       // Register a new read
       this.currentRead = this.readNext().finally(() => {
         this.currentRead = undefined;
@@ -808,7 +808,7 @@ export class ContextImpl implements ObjectContext, WorkflowContext {
     const error = ensureError(e);
     if (
       !(error instanceof RestateError) ||
-      error.code != SUSPENDED_ERROR_CODE
+      error.code !== SUSPENDED_ERROR_CODE
     ) {
       this.console.warn("Function completed with an error.\n", error);
     }
@@ -823,7 +823,7 @@ function unpack<T>(
   a: string | RunAction<T>,
   b?: RunAction<T>
 ): { name?: string; action: RunAction<T> } {
-  if (typeof a == "string") {
+  if (typeof a === "string") {
     if (typeof b !== "function") {
       throw new TypeError("");
     }

packages/restate-sdk/src/endpoint/handlers/generic.ts

@@ -97,7 +97,10 @@ export class GenericHandler implements RestateHandler {
     private readonly protocolMode: ProtocolMode
   ) {
     // Setup identity verifier
-    if (this.endpoint.keySet == undefined || this.endpoint.keySet.length == 0) {
+    if (
+      this.endpoint.keySet === undefined ||
+      this.endpoint.keySet.length === 0
+    ) {
       this.endpoint.rlog.warn(
         `Accepting requests without validating request signatures; handler access must be restricted`
       );
@@ -257,7 +260,7 @@ export class GenericHandler implements RestateHandler {
     // Now buffer input entries
     while (!coreVm.is_ready_to_execute()) {
       const nextValue = await inputReader.read();
-      if (nextValue.value != undefined) {
+      if (nextValue.value !== undefined) {
         coreVm.notify_input(nextValue.value);
       }
       if (nextValue.done) {
@@ -318,7 +321,7 @@ export class GenericHandler implements RestateHandler {
         const error = ensureError(e);
         if (
           !(error instanceof RestateError) ||
-          error.code != SUSPENDED_ERROR_CODE
+          error.code !== SUSPENDED_ERROR_CODE
         ) {
           console.warn("Function completed with an error.\n", error);
         }

packages/restate-sdk/src/logger.ts

@@ -108,7 +108,7 @@ export const defaultLogger: Logger = (
 function readRestateLogLevel(): RestateLogLevel {
   const env = globalThis.process?.env?.RESTATE_LOGGING;
   const level = logLevelFromName(env);
-  if (level != null) {
+  if (level !== null) {
     return level;
   }
   return RestateLogLevel.INFO;

packages/restate-sdk/src/types/components.ts

@@ -145,7 +145,7 @@ export class VirtualObjectComponent implements Component {
             contentType: opts.contentType ?? "application/json",
           },
           ty:
-            opts.kind == HandlerKind.EXCLUSIVE
+            opts.kind === HandlerKind.EXCLUSIVE
               ? d.ServiceHandlerType.EXCLUSIVE
               : d.ServiceHandlerType.SHARED,
         };
@@ -220,7 +220,7 @@ export class WorkflowComponent implements Component {
             contentType: handler.contentType ?? "application/json",
           },
           ty:
-            handler.kind == HandlerKind.WORKFLOW
+            handler.kind === HandlerKind.WORKFLOW
               ? d.ServiceHandlerType.WORKFLOW
               : d.ServiceHandlerType.SHARED,
         };

packages/restate-sdk/src/types/errors.ts

@@ -22,7 +22,7 @@ export function ensureError(e: unknown): Error {
   if (e instanceof Error) {
     return e;
   }
-  if (typeof e == "object" && e != null && "code" in e && "message" in e) {
+  if (typeof e === "object" && e !== null && "code" in e && "message" in e) {
     // This is an error from the VM
     return new RestateError(e.message as string, {
       errorCode: e.code as number,

packages/restate-sdk/src/types/rpc.ts

@@ -409,7 +409,7 @@ export class HandlerWrapper {
     } else if (opts?.accept) {
       // accept but no serializer, use pass trough
       inputSerde = new DeserializerWrapper(opts.accept, (input) => input);
-    } else if (opts?.contentType == JSON_CONTENT_TYPE) {
+    } else if (opts?.contentType === JSON_CONTENT_TYPE) {
       // contentType is JSON, use the default serde
       inputSerde = defaultSerde();
     } else if (opts?.input) {
@@ -426,7 +426,7 @@ export class HandlerWrapper {
         opts.contentType ?? JSON_CONTENT_TYPE,
         opts.outputSerializer
       );
-    } else if (opts?.contentType == JSON_CONTENT_TYPE) {
+    } else if (opts?.contentType === JSON_CONTENT_TYPE) {
       // contentType is JSON, use the default serde
       outputSerde = defaultSerde();
     } else if (opts?.contentType) {
@@ -541,7 +541,7 @@ export namespace handlers {
       optsOrFn: WorkflowHandlerOpts | WorkflowHandler<F, WorkflowContext<any>>,
       fn?: WorkflowHandler<F, WorkflowContext<any>>
     ): F {
-      if (typeof optsOrFn == "function") {
+      if (typeof optsOrFn === "function") {
         return HandlerWrapper.from(HandlerKind.WORKFLOW, optsOrFn).transpose();
       }
       const opts = optsOrFn satisfies WorkflowHandlerOpts;
@@ -593,7 +593,7 @@ export namespace handlers {
         | WorkflowSharedHandler<F, WorkflowSharedContext<any>>,
       fn?: WorkflowSharedHandler<F, WorkflowSharedContext<any>>
     ): F {
-      if (typeof optsOrFn == "function") {
+      if (typeof optsOrFn === "function") {
         return HandlerWrapper.from(HandlerKind.SHARED, optsOrFn).transpose();
       }
       const opts = optsOrFn satisfies ObjectHandlerOpts;
@@ -649,7 +649,7 @@ export namespace handlers {
       optsOrFn: ObjectHandlerOpts | ObjectHandler<F, ObjectContext<any>>,
       fn?: ObjectHandler<F, ObjectContext<any>>
     ): F {
-      if (typeof optsOrFn == "function") {
+      if (typeof optsOrFn === "function") {
         return HandlerWrapper.from(HandlerKind.EXCLUSIVE, optsOrFn).transpose();
       }
       const opts = optsOrFn satisfies ObjectHandlerOpts;
@@ -707,7 +707,7 @@ export namespace handlers {
         | ObjectSharedHandler<F, ObjectSharedContext<any>>,
       fn?: ObjectSharedHandler<F, ObjectSharedContext<any>>
     ): F {
-      if (typeof optsOrFn == "function") {
+      if (typeof optsOrFn === "function") {
         return HandlerWrapper.from(HandlerKind.SHARED, optsOrFn).transpose();
       }
       const opts = optsOrFn satisfies ObjectHandlerOpts;
@@ -973,7 +973,7 @@ export const workflow = <P extends string, M>(workflow: {
   } else {
     throw new TypeError(`Missing main workflow handler, named 'run'`);
   }
-  if (runWrapper.kind != HandlerKind.WORKFLOW) {
+  if (runWrapper.kind !== HandlerKind.WORKFLOW) {
     throw new TypeError(
       `Workflow's main handler handler run, must be of type workflow'`
     );
@@ -986,7 +986,7 @@ export const workflow = <P extends string, M>(workflow: {
   //
 
   for (const [name, handler] of Object.entries(workflow.handlers)) {
-    if (name == "run") {
+    if (name === "run") {
       continue;
     }
     let wrapper: HandlerWrapper;
@@ -1000,7 +1000,7 @@ export const workflow = <P extends string, M>(workflow: {
     } else {
       throw new TypeError(`Unexpected handler type ${name}`);
     }
-    if (wrapper.kind == HandlerKind.WORKFLOW) {
+    if (wrapper.kind === HandlerKind.WORKFLOW) {
       throw new TypeError(
         `A workflow must contain exactly one handler annotated as workflow, named 'run'. Please use a shared handler for any additional handlers`
       );

packages/restate-sdk/src/utils/rand.ts

@@ -24,7 +24,7 @@ export class RandImpl implements Rand {
     id: string | [bigint, bigint, bigint, bigint],
     private readonly checkState: (state: string) => void = () => undefined
   ) {
-    if (typeof id == "string") {
+    if (typeof id === "string") {
       // hash the invocation ID, which is known to contain 74 bits of entropy
       const hash = createHash("sha256").update(id).digest();