Add @inngest/ai (#802)

## Summary
<!-- Succinctly describe your change, providing context, what you've
changed, and why. -->

Adds the `@inngest/ai` package, exporting models, adapters, and types
for AI workflows.

## Checklist
<!-- Tick these items off as you progress. -->
<!-- If an item isn't applicable, ideally please strikeout the item by
wrapping it in "~~"" and suffix it with "N/A My reason for skipping
this." -->
<!-- e.g. "- [ ] ~~Added tests~~ N/A Only touches docs" -->

- [ ] ~Added a [docs PR](https://github.com/inngest/website) that
references this PR~ N/A
- [ ] ~Added unit/integration tests~ N/A Shifting packages
- [x] Added changesets if applicable

.changeset/six-roses-melt.md

@@ -0,0 +1,5 @@
+---
+"inngest": patch
+---
+
+Use `@inngest/ai` to expose AI models, adapters, and types

.changeset/wild-buses-yawn.md

@@ -0,0 +1,5 @@
+---
+"@inngest/ai": patch
+---
+
+Add `@inngest/ai`

packages/ai/.gitignore

@@ -0,0 +1,3 @@
+dist
+node_modules
+*.tgz

packages/ai/README.md

@@ -0,0 +1 @@
+# @inngest/ai

packages/ai/eslint.config.mjs

@@ -0,0 +1,13 @@
+import pluginJs from "@eslint/js";
+import eslintPluginPrettierRecommended from "eslint-plugin-prettier/recommended";
+import globals from "globals";
+import tseslint from "typescript-eslint";
+
+/** @type {import('eslint').Linter.Config[]} */
+export default [
+  { files: ["**/*.{js,mjs,cjs,ts}"] },
+  { languageOptions: { globals: globals.browser } },
+  pluginJs.configs.recommended,
+  ...tseslint.configs.recommended,
+  eslintPluginPrettierRecommended,
+];

packages/ai/jsr.json

@@ -0,0 +1,12 @@
+{
+  "$schema": "https://jsr.io/schema/config-file.v1.json",
+  "name": "@inngest/ai",
+  "description": "",
+  "version": "0.0.0",
+  "include": ["./src/**/*.ts"],
+  "exports": {
+    ".": "./src/index.ts",
+    "./models": "./src/models/index.ts",
+    "./adapters": "./src/adapters/index.ts"
+  }
+}

packages/ai/package.json

@@ -0,0 +1,57 @@
+{
+  "name": "@inngest/ai",
+  "version": "0.0.0",
+  "description": "",
+  "main": "dist/index.js",
+  "publishConfig": {
+    "registry": "https://registry.npmjs.org"
+  },
+  "scripts": {
+    "build": "tsc",
+    "postversion": "pnpm run build",
+    "release": "node ../../scripts/release/publish.js && pnpm dlx jsr publish --allow-slow-types --allow-dirty"
+  },
+  "files": [
+    "dist"
+  ],
+  "exports": {
+    ".": {
+      "require": "./dist/index.js",
+      "import": "./dist/index.js",
+      "types": "./dist/index.d.ts"
+    },
+    "./models": {
+      "require": "./dist/models/index.js",
+      "import": "./dist/models/index.js",
+      "types": "./dist/models/index.d.ts"
+    },
+    "./adapters": {
+      "require": "./dist/adapters/index.js",
+      "import": "./dist/adapters/index.js",
+      "types": "./dist/adapters/index.d.ts"
+    }
+  },
+  "keywords": [
+    "inngest",
+    "ai"
+  ],
+  "homepage": "https://github.com/inngest/inngest-js/tree/main/packages/ai#readme",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/inngest/inngest-js.git",
+    "directory": "packages/ai"
+  },
+  "author": "Inngest Inc. <[email protected]>",
+  "license": "ISC",
+  "dependencies": {
+    "@types/node": "^22.10.5",
+    "typescript": "^5.7.3"
+  },
+  "devDependencies": {
+    "@eslint/js": "^9.7.0",
+    "eslint": "^9.18.0",
+    "eslint-plugin-prettier": "^5.2.1",
+    "globals": "^15.14.0",
+    "typescript-eslint": "^7.16.1"
+  }
+}

packages/inngest/src/components/ai/adapter.ts → packages/ai/src/adapter.ts

@@ -74,7 +74,7 @@ export interface AiAdapter {
     /**
      * The input to pass to the model.
      */
-    body: this[types]["input"]
+    body: this[types]["input"],
   ) => void;
 }
 

packages/ai/src/adapters/index.ts

@@ -0,0 +1,2 @@
+export * from "./anthropic.js";
+export * from "./openai.js";

packages/ai/src/env.ts

@@ -0,0 +1,69 @@
+export type EnvValue = string | undefined;
+export type Env = Record<string, EnvValue>;
+
+/**
+ * The Deno environment, which is not always available.
+ */
+declare const Deno: {
+  env: { toObject: () => Env };
+};
+
+/**
+ * The Netlify environment, which is not always available.
+ */
+declare const Netlify: {
+  env: { toObject: () => Env };
+};
+
+/**
+ * allProcessEnv returns the current process environment variables, or an empty
+ * object if they cannot be read, making sure we support environments other than
+ * Node such as Deno, too.
+ *
+ * Using this ensures we don't dangerously access `process.env` in environments
+ * where it may not be defined, such as Deno or the browser.
+ */
+export const allProcessEnv = (): Env => {
+  // Node, or Node-like environments
+  try {
+    if (process.env) {
+      return process.env;
+    }
+  } catch (_err) {
+    // noop
+  }
+
+  // Deno
+  try {
+    const env = Deno.env.toObject();
+
+    if (env) {
+      return env;
+    }
+  } catch (_err) {
+    // noop
+  }
+
+  // Netlify
+  try {
+    const env = Netlify.env.toObject();
+
+    if (env) {
+      return env;
+    }
+  } catch (_err) {
+    // noop
+  }
+
+  return {};
+};
+
+export const processEnv = (key: string): EnvValue => {
+  return allProcessEnv()[key];
+};
+
+export enum envKeys {
+  OpenAiApiKey = "OPENAI_API_KEY",
+  GeminiApiKey = "GEMINI_API_KEY",
+  AnthropicApiKey = "ANTHROPIC_API_KEY",
+}

packages/ai/src/index.ts

@@ -0,0 +1,3 @@
+export type { AiAdapter, AiAdapters } from "./adapter.js";
+export * from "./adapters/index.js";
+export * from "./models/index.js";

packages/inngest/src/components/ai/models/anthropic.ts → packages/ai/src/models/anthropic.ts

@@ -1,7 +1,6 @@
-import { envKeys } from "../../../helpers/consts.js";
-import { processEnv } from "../../../helpers/env.js";
 import { type AiAdapter } from "../adapter.js";
 import { type AnthropicAiAdapter } from "../adapters/anthropic.js";
+import { envKeys, processEnv } from "../env";
 
 /**
  * Create an Anthropic model using the Anthropic chat format.

packages/inngest/src/components/ai/models/gemini.ts → packages/ai/src/models/gemini.ts

@@ -1,6 +1,5 @@
-import { envKeys } from "../../../helpers/consts.js";
-import { processEnv } from "../../../helpers/env.js";
 import { type AiAdapter } from "../adapter.js";
+import { envKeys, processEnv } from "../env";
 import { type OpenAi, openai } from "./openai.js";
 
 /**

packages/ai/src/models/index.ts

@@ -0,0 +1,3 @@
+export * from "./anthropic";
+export * from "./gemini";
+export * from "./openai";

packages/inngest/src/components/ai/models/openai.ts → packages/ai/src/models/openai.ts

@@ -1,7 +1,6 @@
-import { envKeys } from "../../../helpers/consts.js";
-import { processEnv } from "../../../helpers/env.js";
 import { type AiAdapter } from "../adapter.js";
 import { type OpenAiAiAdapter } from "../adapters/openai.js";
+import { envKeys, processEnv } from "../env";
 
 /**
  * Create an OpenAI model using the OpenAI chat format.

packages/ai/tsconfig.json

@@ -0,0 +1,111 @@
+{
+  "compilerOptions": {
+    /* Visit https://aka.ms/tsconfig to read more about this file */
+
+    /* Projects */
+    // "incremental": true,                              /* Save .tsbuildinfo files to allow for incremental compilation of projects. */
+    // "composite": true,                                /* Enable constraints that allow a TypeScript project to be used with project references. */
+    // "tsBuildInfoFile": "./.tsbuildinfo",              /* Specify the path to .tsbuildinfo incremental compilation file. */
+    // "disableSourceOfProjectReferenceRedirect": true,  /* Disable preferring source files instead of declaration files when referencing composite projects. */
+    // "disableSolutionSearching": true,                 /* Opt a project out of multi-project reference checking when editing. */
+    // "disableReferencedProjectLoad": true,             /* Reduce the number of projects loaded automatically by TypeScript. */
+
+    /* Language and Environment */
+    "target": "es2016" /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */,
+    // "lib": [],                                        /* Specify a set of bundled library declaration files that describe the target runtime environment. */
+    // "jsx": "preserve",                                /* Specify what JSX code is generated. */
+    // "experimentalDecorators": true,                   /* Enable experimental support for legacy experimental decorators. */
+    // "emitDecoratorMetadata": true,                    /* Emit design-type metadata for decorated declarations in source files. */
+    // "jsxFactory": "",                                 /* Specify the JSX factory function used when targeting React JSX emit, e.g. 'React.createElement' or 'h'. */
+    // "jsxFragmentFactory": "",                         /* Specify the JSX Fragment reference used for fragments when targeting React JSX emit e.g. 'React.Fragment' or 'Fragment'. */
+    // "jsxImportSource": "",                            /* Specify module specifier used to import the JSX factory functions when using 'jsx: react-jsx*'. */
+    // "reactNamespace": "",                             /* Specify the object invoked for 'createElement'. This only applies when targeting 'react' JSX emit. */
+    // "noLib": true,                                    /* Disable including any library files, including the default lib.d.ts. */
+    // "useDefineForClassFields": true,                  /* Emit ECMAScript-standard-compliant class fields. */
+    // "moduleDetection": "auto",                        /* Control what method is used to detect module-format JS files. */
+
+    /* Modules */
+    "module": "NodeNext" /* Specify what module code is generated. */,
+    "rootDir": "./src" /* Specify the root folder within your source files. */,
+    "moduleResolution": "NodeNext" /* Specify how TypeScript looks up a file from a given module specifier. */,
+    // "baseUrl": "./",                                  /* Specify the base directory to resolve non-relative module names. */
+    // "paths": {},                                      /* Specify a set of entries that re-map imports to additional lookup locations. */
+    // "rootDirs": [],                                   /* Allow multiple folders to be treated as one when resolving modules. */
+    // "typeRoots": [],                                  /* Specify multiple folders that act like './node_modules/@types'. */
+    "types": [
+      "node"
+    ] /* Specify type package names to be included without being referenced in a source file. */,
+    // "allowUmdGlobalAccess": true,                     /* Allow accessing UMD globals from modules. */
+    // "moduleSuffixes": [],                             /* List of file name suffixes to search when resolving a module. */
+    // "allowImportingTsExtensions": true,               /* Allow imports to include TypeScript file extensions. Requires '--moduleResolution bundler' and either '--noEmit' or '--emitDeclarationOnly' to be set. */
+    // "resolvePackageJsonExports": true,                /* Use the package.json 'exports' field when resolving package imports. */
+    // "resolvePackageJsonImports": true,                /* Use the package.json 'imports' field when resolving imports. */
+    // "customConditions": [],                           /* Conditions to set in addition to the resolver-specific defaults when resolving imports. */
+    "resolveJsonModule": true /* Enable importing .json files. */,
+    // "allowArbitraryExtensions": true,                 /* Enable importing files with any extension, provided a declaration file is present. */
+    // "noResolve": true,                                /* Disallow 'import's, 'require's or '<reference>'s from expanding the number of files TypeScript should add to a project. */
+
+    /* JavaScript Support */
+    // "allowJs": true,                                  /* Allow JavaScript files to be a part of your program. Use the 'checkJS' option to get errors from these files. */
+    // "checkJs": true,                                  /* Enable error reporting in type-checked JavaScript files. */
+    // "maxNodeModuleJsDepth": 1,                        /* Specify the maximum folder depth used for checking JavaScript files from 'node_modules'. Only applicable with 'allowJs'. */
+
+    /* Emit */
+    "declaration": true /* Generate .d.ts files from TypeScript and JavaScript files in your project. */,
+    "declarationMap": true /* Create sourcemaps for d.ts files. */,
+    // "emitDeclarationOnly": true,                      /* Only output d.ts files and not JavaScript files. */
+    "sourceMap": true /* Create source map files for emitted JavaScript files. */,
+    // "inlineSourceMap": true,                          /* Include sourcemap files inside the emitted JavaScript. */
+    // "outFile": "./",                                  /* Specify a file that bundles all outputs into one JavaScript file. If 'declaration' is true, also designates a file that bundles all .d.ts output. */
+    "outDir": "./dist" /* Specify an output folder for all emitted files. */,
+    // "removeComments": true,                           /* Disable emitting comments. */
+    // "noEmit": true,                                   /* Disable emitting files from a compilation. */
+    // "importHelpers": true,                            /* Allow importing helper functions from tslib once per project, instead of including them per-file. */
+    // "importsNotUsedAsValues": "remove",               /* Specify emit/checking behavior for imports that are only used for types. */
+    // "downlevelIteration": true,                       /* Emit more compliant, but verbose and less performant JavaScript for iteration. */
+    // "sourceRoot": "",                                 /* Specify the root path for debuggers to find the reference source code. */
+    // "mapRoot": "",                                    /* Specify the location where debugger should locate map files instead of generated locations. */
+    // "inlineSources": true,                            /* Include source code in the sourcemaps inside the emitted JavaScript. */
+    // "emitBOM": true,                                  /* Emit a UTF-8 Byte Order Mark (BOM) in the beginning of output files. */
+    // "newLine": "crlf",                                /* Set the newline character for emitting files. */
+    // "stripInternal": true,                            /* Disable emitting declarations that have '@internal' in their JSDoc comments. */
+    // "noEmitHelpers": true,                            /* Disable generating custom helper functions like '__extends' in compiled output. */
+    // "noEmitOnError": true,                            /* Disable emitting files if any type checking errors are reported. */
+    // "preserveConstEnums": true,                       /* Disable erasing 'const enum' declarations in generated code. */
+    // "declarationDir": "./",                           /* Specify the output directory for generated declaration files. */
+    // "preserveValueImports": true,                     /* Preserve unused imported values in the JavaScript output that would otherwise be removed. */
+
+    /* Interop Constraints */
+    // "isolatedModules": true,                          /* Ensure that each file can be safely transpiled without relying on other imports. */
+    // "verbatimModuleSyntax": true,                     /* Do not transform or elide any imports or exports not marked as type-only, ensuring they are written in the output file's format based on the 'module' setting. */
+    // "allowSyntheticDefaultImports": true,             /* Allow 'import x from y' when a module doesn't have a default export. */
+    "esModuleInterop": true /* Emit additional JavaScript to ease support for importing CommonJS modules. This enables 'allowSyntheticDefaultImports' for type compatibility. */,
+    // "preserveSymlinks": true,                         /* Disable resolving symlinks to their realpath. This correlates to the same flag in node. */
+    "forceConsistentCasingInFileNames": true /* Ensure that casing is correct in imports. */,
+
+    /* Type Checking */
+    "strict": true /* Enable all strict type-checking options. */,
+    // "noImplicitAny": true,                            /* Enable error reporting for expressions and declarations with an implied 'any' type. */
+    "strictNullChecks": true /* When type checking, take into account 'null' and 'undefined'. */,
+    // "strictFunctionTypes": true,                      /* When assigning functions, check to ensure parameters and the return values are subtype-compatible. */
+    // "strictBindCallApply": true,                      /* Check that the arguments for 'bind', 'call', and 'apply' methods match the original function. */
+    // "strictPropertyInitialization": true,             /* Check for class properties that are declared but not set in the constructor. */
+    // "noImplicitThis": true,                           /* Enable error reporting when 'this' is given the type 'any'. */
+    // "useUnknownInCatchVariables": true,               /* Default catch clause variables as 'unknown' instead of 'any'. */
+    // "alwaysStrict": true,                             /* Ensure 'use strict' is always emitted. */
+    // "noUnusedLocals": true,                           /* Enable error reporting when local variables aren't read. */
+    // "noUnusedParameters": true,                       /* Raise an error when a function parameter isn't read. */
+    // "exactOptionalPropertyTypes": true,               /* Interpret optional property types as written, rather than adding 'undefined'. */
+    // "noImplicitReturns": true,                        /* Enable error reporting for codepaths that do not explicitly return in a function. */
+    // "noFallthroughCasesInSwitch": true,               /* Enable error reporting for fallthrough cases in switch statements. */
+    "noUncheckedIndexedAccess": true /* Add 'undefined' to a type when accessed using an index. */,
+    "noImplicitOverride": true /* Ensure overriding members in derived classes are marked with an override modifier. */,
+    // "noPropertyAccessFromIndexSignature": true,       /* Enforces using indexed accessors for keys declared using an indexed type. */
+    // "allowUnusedLabels": true,                        /* Disable error reporting for unused labels. */
+    // "allowUnreachableCode": true,                     /* Disable error reporting for unreachable code. */
+
+    /* Completeness */
+    // "skipDefaultLibCheck": true,                      /* Skip type checking .d.ts files that are included with TypeScript. */
+    "skipLibCheck": true /* Skip type checking all .d.ts files. */
+  }
+}

packages/inngest/package.json

@@ -193,6 +193,7 @@
     "trailingComma": "es5"
   },
   "dependencies": {
+    "@inngest/ai": "^0.0.0",
     "@types/debug": "^4.1.12",
     "canonicalize": "^1.0.8",
     "chalk": "^4.1.2",

packages/inngest/src/components/InngestStepTools.test.ts

@@ -1,5 +1,5 @@
 /* eslint-disable @typescript-eslint/no-unsafe-assignment */
-import { openai } from "@local/components/ai";
+import { openai } from "@local";
 import { EventSchemas } from "@local/components/EventSchemas";
 import { type Inngest } from "@local/components/Inngest";
 import { InngestFunction } from "@local/components/InngestFunction";

packages/inngest/src/components/InngestStepTools.ts

@@ -1,3 +1,4 @@
+import { gemini, openai, type AiAdapter } from "@inngest/ai";
 import { z } from "zod";
 import { logPrefix } from "../helpers/consts.js";
 import { type Jsonify } from "../helpers/jsonify.js";
@@ -30,7 +31,6 @@ import {
 } from "./Inngest.js";
 import { InngestFunction } from "./InngestFunction.js";
 import { InngestFunctionReference } from "./InngestFunctionReference.js";
-import { gemini, openai, type AiAdapter } from "./ai/index.js";
 
 import { type InngestExecution } from "./execution/InngestExecution.js";
 

packages/inngest/src/index.ts

@@ -38,14 +38,14 @@
  * @module
  */
 
-export * from "./components/ai/index.js";
+export * from "@inngest/ai";
 export {
   EventSchemas,
   type AssertInternalEventPayloads,
   type Combine,
   type LiteralZodEventSchema,
-  type StandardEventSchemaToPayload,
   type StandardEventSchemas,
+  type StandardEventSchemaToPayload,
   type ZodEventSchemas,
 } from "./components/EventSchemas.js";
 export type {