feat: first class abort errors (#1061)

.gitignore

@@ -7,3 +7,4 @@ coverage
 tsconfig.vitest-temp.json
 website/.vitepress/dist
 website/.vitepress/cache
+legacy

examples/transport-http_abort.output.txt

@@ -0,0 +1 @@
+'This operation was aborted'

examples/transport-http_abort.ts

@@ -0,0 +1,32 @@
+/**
+ * It is possible to cancel a request using an `AbortController` signal.
+ */
+
+import { gql, Graffle } from '../src/entrypoints/main.js'
+import { publicGraphQLSchemaEndpoints, show } from './$helpers.js'
+
+const abortController = new AbortController()
+
+const graffle = Graffle.create({
+  schema: publicGraphQLSchemaEndpoints.SocialStudies,
+})
+
+const resultPromise = graffle
+  .with({ request: { signal: abortController.signal } })
+  .raw({
+    document: gql`
+      {
+        countries {
+          name
+        }
+      }
+    `,
+  })
+
+abortController.abort()
+
+const result = await resultPromise.catch((error: unknown) => (error as Error).message)
+
+show(result)
+
+// todo .with(...) variant

examples/transport-http_fetch.ts

@@ -1,6 +1,6 @@
 /* eslint-disable */
 import { Graffle } from '../src/entrypoints/main.js'
-import { show, showJson } from './$helpers.js'
+import { showJson } from './$helpers.js'
 import { publicGraphQLSchemaEndpoints } from './$helpers.js'
 
 const graffle = Graffle

src/layers/5_core/core.ts

@@ -312,7 +312,6 @@ export const anyware = Anyware.create<HookSequence, HookMap, ExecutionResult>({
           // 1. Generate a map of possible custom scalar paths (tree structure)
           // 2. When traversing the result, skip keys that are not in the map
           const dataDecoded = Result.decode(getRootIndexOrThrow(input.context, input.rootTypeName), input.result.data)
-          // console.log(8, Object.keys({ ...input.result, data: dataDecoded }))
           switch (input.transport) {
             case `memory`: {
               return { ...input.result, data: dataDecoded }

src/layers/6_client/RootTypeMethods.ts

@@ -65,7 +65,9 @@ export type RootTypeMethods<$Config extends Config, $Index extends Schema.Index,
 // dprint-ignore
 type RootMethod<$Config extends Config, $Index extends Schema.Index, $RootTypeName extends Schema.RootTypeName> =
   <$SelectionSet extends object>(selectionSet: Exact<$SelectionSet, SelectionSet.Root<$Index, $RootTypeName>>) =>
-    Promise<ResolveOutputReturnRootType<$Config, $Index, ResultSet.Root<AugmentRootTypeSelectionWithTypename<$Config,$Index,$RootTypeName,$SelectionSet>, $Index, $RootTypeName>>>
+    Promise<
+      ResolveOutputReturnRootType<$Config, $Index, ResultSet.Root<AugmentRootTypeSelectionWithTypename<$Config,$Index,$RootTypeName,$SelectionSet>, $Index, $RootTypeName>>
+    >
 
 // dprint-ignore
 type RootTypeFieldMethod<$Context extends RootTypeFieldContext> =

src/layers/6_client/Settings/Config.ts

@@ -1,11 +1,12 @@
 import type { GraphQLError } from 'graphql'
 import type { Simplify } from 'type-fest'
 import type { GraphQLExecutionResultError } from '../../../lib/graphql.js'
-import type { ConfigManager, StringKeyof, Values } from '../../../lib/prelude.js'
+import type { ConfigManager, SimplifyExceptError, StringKeyof, Values } from '../../../lib/prelude.js'
 import type { Schema } from '../../1_Schema/__.js'
 import type { GlobalRegistry } from '../../2_generator/globalRegistry.js'
 import type { SelectionSet } from '../../3_SelectionSet/__.js'
 import type { Transport } from '../../5_core/types.js'
+import type { ErrorsOther } from '../client.js'
 import type { InputStatic } from './Input.js'
 import type { RequestInputOptions } from './inputIncrementable/request.js'
 
@@ -116,25 +117,29 @@ export type Config = {
 
 // dprint-ignore
 export type ResolveOutputReturnRootType<$Config extends Config, $Index extends Schema.Index, $Data> =
- | Simplify<IfConfiguredGetOutputErrorReturns<$Config>>
- | (
-      $Config['output']['envelope']['enabled'] extends true
-        ? Envelope<$Config, IfConfiguredStripSchemaErrorsFromDataRootType<$Config, $Index, $Data>>
-        : Simplify<IfConfiguredStripSchemaErrorsFromDataRootType<$Config, $Index, $Data>>
-   )
+  SimplifyExceptError<
+   | IfConfiguredGetOutputErrorReturns<$Config>
+   | (
+        $Config['output']['envelope']['enabled'] extends true
+          ? Envelope<$Config, IfConfiguredStripSchemaErrorsFromDataRootType<$Config, $Index, $Data>>
+          : Simplify<IfConfiguredStripSchemaErrorsFromDataRootType<$Config, $Index, $Data>>
+     )
+ >
 
 // dprint-ignore
 export type ResolveOutputReturnRootField<$Config extends Config, $Index extends Schema.Index, $Data, $DataRaw = undefined> =
-  | IfConfiguredGetOutputErrorReturns<$Config>
-  | (
-      $Config['output']['envelope']['enabled'] extends true
-        // todo: a typed execution result that allows for additional error types.
-        // currently it is always graphql execution error however envelope configuration can put more errors into that.
-        ? Envelope<$Config, $DataRaw extends undefined
-            ? Simplify<IfConfiguredStripSchemaErrorsFromDataRootField<$Config, $Index, $Data>>
-            : Simplify<IfConfiguredStripSchemaErrorsFromDataRootType<$Config, $Index, $DataRaw>>>
-        : Simplify<IfConfiguredStripSchemaErrorsFromDataRootField<$Config, $Index, $Data>>
-    )
+  SimplifyExceptError<
+    | IfConfiguredGetOutputErrorReturns<$Config>
+    | (
+        $Config['output']['envelope']['enabled'] extends true
+          // todo: a typed execution result that allows for additional error types.
+          // currently it is always graphql execution error however envelope configuration can put more errors into that.
+          ? Envelope<$Config, $DataRaw extends undefined
+              ? Simplify<IfConfiguredStripSchemaErrorsFromDataRootField<$Config, $Index, $Data>>
+              : Simplify<IfConfiguredStripSchemaErrorsFromDataRootType<$Config, $Index, $DataRaw>>>
+          : Simplify<IfConfiguredStripSchemaErrorsFromDataRootField<$Config, $Index, $Data>>
+      )
+  >
 
 type ObjMap<T = unknown> = {
   [key: string]: T
@@ -193,7 +198,7 @@ type ConfigGetOutputError<$Config extends Config, $ErrorCategory extends ErrorCa
 // dprint-ignore
 type IfConfiguredGetOutputErrorReturns<$Config extends Config> =
   | (ConfigGetOutputError<$Config, 'execution'>  extends 'return'  ? GraphQLExecutionResultError  : never)
-  | (ConfigGetOutputError<$Config, 'other'>      extends 'return'  ? Error                        : never)
+  | (ConfigGetOutputError<$Config, 'other'>      extends 'return'  ? ErrorsOther                  : never)
   | (ConfigGetOutputError<$Config, 'schema'>     extends 'return'  ? Error                        : never)
 
 // dprint-ignore

src/layers/6_client/Settings/client.create.config.output.test-d.ts

@@ -1,14 +1,12 @@
 /* eslint-disable */
 import { type ExecutionResult } from 'graphql'
-import type { ObjMap } from 'graphql/jsutils/ObjMap.js'
 import { describe } from 'node:test'
-import type { Simplify } from 'type-fest'
-import type { ConditionalSimplify } from 'type-fest/source/conditional-simplify.js'
 import { expectTypeOf, test } from 'vitest'
 import { Graffle } from '../../../../tests/_/schema/generated/__.js'
 import { schema } from '../../../../tests/_/schema/schema.js'
 import { type GraphQLExecutionResultError } from '../../../lib/graphql.js'
-import { type Envelope, type OutputConfigDefault } from './Config.js'
+import type { ErrorsOther } from '../client.js'
+import { type Envelope } from './Config.js'
 
 const G = Graffle.create
 
@@ -104,15 +102,15 @@ describe('.envelope', () => {
     describe('.errors', () => {
       test('defaults to execution errors in envelope', () => {
         const g = G({ schema, output: { defaults: { errorChannel: 'return' }, envelope: true } })
-        expectTypeOf(g.query.__typename()).resolves.toEqualTypeOf<ExecutionResult<{ __typename: 'Query' }> | Error>()
+        expectTypeOf(g.query.__typename()).resolves.toEqualTypeOf<ExecutionResult<{ __typename: 'Query' }> | ErrorsOther>()
       })
       test('.execution:false restores errors to return', async () => {
         const g = G({
           schema,
           output: { defaults: { errorChannel: 'return' }, envelope: { errors: { execution: false } } },
         })
         expectTypeOf(g.query.__typename()).resolves.toEqualTypeOf<
-          Omit<ExecutionResult<{ __typename: 'Query' }>, 'errors'> | Error | GraphQLExecutionResultError
+          Omit<ExecutionResult<{ __typename: 'Query' }>, 'errors'> | ErrorsOther | GraphQLExecutionResultError
         >()
       })
       test('.other:true raises them to envelope', () => {
@@ -140,7 +138,7 @@ describe('defaults.errorChannel: "return"', () => {
   describe('puts errors into return type', () => {
     const g = G({ schema, output: { defaults: { errorChannel: 'return' } } })
     test('query.<fieldMethod>', () => {
-      expectTypeOf(g.query.__typename()).resolves.toEqualTypeOf<'Query' | Error | GraphQLExecutionResultError>()
+      expectTypeOf(g.query.__typename()).resolves.toEqualTypeOf<'Query' | ErrorsOther | GraphQLExecutionResultError>()
     })
   })
   describe('with .errors', () => {
@@ -149,7 +147,7 @@ describe('defaults.errorChannel: "return"', () => {
         schema,
         output: { defaults: { errorChannel: 'return' }, errors: { execution: 'throw' } },
       })
-      expectTypeOf(await g.query.__typename()).toEqualTypeOf<'Query' | Error>()
+      expectTypeOf(await g.query.__typename()).toEqualTypeOf<'Query' | ErrorsOther>()
     })
     test('.other: throw', async () => {
       const g = G({

src/layers/6_client/client.test.ts

@@ -59,14 +59,42 @@ describe(`transport`, () => {
       const request = fetch.mock.calls[0]?.[0]
       expect(request?.headers.get(`x-foo`)).toEqual(`bar`)
     })
-
-    test(`sends well formed request`, async ({ fetch, graffle }) => {
+    test(`sends spec compliant request`, async ({ fetch, graffle }) => {
       fetch.mockImplementationOnce(() => Promise.resolve(createResponse({ data: { greetings: `Hello World` } })))
       await graffle.rawString({ document: `query { greetings }` })
       const request = fetch.mock.calls[0]?.[0]
       expect(request?.headers.get(`content-type`)).toEqual(CONTENT_TYPE_JSON)
       expect(request?.headers.get(`accept`)).toEqual(CONTENT_TYPE_GQL)
     })
+    describe(`signal`, () => {
+      // JSDom and Node result in different errors. JSDom is a plain Error type. Presumably an artifact of JSDom and now in actual browsers.
+      const abortErrorMessagePattern = /This operation was aborted|AbortError: The operation was aborted/
+      test(`AbortController at instance level works`, async () => {
+        const abortController = new AbortController()
+        const graffle = Graffle.create({
+          schema: endpoint,
+          request: { signal: abortController.signal },
+        })
+        const resultPromise = graffle.rawString({ document: `query { id }` })
+        abortController.abort()
+        const { caughtError } = await resultPromise.catch((caughtError: unknown) => ({ caughtError })) as any as {
+          caughtError: Error
+        }
+        expect(caughtError.message).toMatch(abortErrorMessagePattern)
+      })
+      test(`AbortController at method level works`, async () => {
+        const abortController = new AbortController()
+        const graffle = Graffle.create({
+          schema: endpoint,
+        }).with({ request: { signal: abortController.signal } })
+        const resultPromise = graffle.rawString({ document: `query { id }` })
+        abortController.abort()
+        const { caughtError } = await resultPromise.catch((caughtError: unknown) => ({ caughtError })) as any as {
+          caughtError: Error
+        }
+        expect(caughtError.message).toMatch(abortErrorMessagePattern)
+      })
+    })
   })
   describe(`memory`, () => {
     test(`anyware hooks are typed to memory transport`, () => {