Implement Json Schema emitter (microsoft#1601)

Author: bterlson

common/changes/@typespec/compiler/json-schema_2023-06-02-21-21.json

@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@typespec/compiler",
+      "comment": "Emitter framework: uppercase type argument type names when constructing a declaration name from a template instantiation.",
+      "type": "none"
+    }
+  ],
+  "packageName": "@typespec/compiler"
+}

common/changes/@typespec/json-schema/json-schema_2023-04-26-21-59.json

@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@typespec/json-schema",
+      "comment": "Add @typespec/json-schema for defining and emitting TypeSpec to standard JSON Schema",
+      "type": "minor"
+    }
+  ],
+  "packageName": "@typespec/json-schema"
+}

common/config/rush/pnpm-lock.yaml

@@ -670,7 +670,8 @@ export class TypeEmitter<T, TOptions extends object = Record<string, never>> {
         case "Operation":
         case "Enum":
         case "Union":
-          return this.emitter.emitDeclarationName(t);
+          const declName = this.emitter.emitDeclarationName(t);
+          return declName[0].toUpperCase() + declName.slice(1);
         default:
           compilerAssert(
             false,

packages/compiler/emitter-framework/type-emitter.ts

@@ -120,9 +120,9 @@ describe("emitter-framework: typescript emitter", () => {
     `);
 
     assert.match(contents, /interface Test1/);
-    assert.match(contents, /interface Templateint32/);
+    assert.match(contents, /interface TemplateInt32/);
     assert.match(contents, /interface Test2/);
-    assert.match(contents, /prop: Templateint32/);
+    assert.match(contents, /prop: TemplateInt32/);
   });
 
   it("emits literal types", async () => {
@@ -260,9 +260,9 @@ describe("emitter-framework: typescript emitter", () => {
     `);
 
     assert.match(contents, /a: 1 \| 2 \| SomeModel/);
-    assert.match(contents, /b: TUstring/);
+    assert.match(contents, /b: TUString/);
     assert.match(contents, /export type U = 1 \| "hello" \| SomeModel/);
-    assert.match(contents, /export type TUstring = string \| null/);
+    assert.match(contents, /export type TUString = string \| null/);
   });
 
   it("emits tuple types", async () => {

packages/compiler/test/emitter-framework/emitter.test.ts

@@ -110,6 +110,10 @@ export class TypeScriptInterfaceEmitter extends CodeTypeEmitter {
   }
 
   modelInstantiation(model: Model, name: string): EmitterOutput<string> {
+    if (this.emitter.getProgram().checker.isStdType(model, "Record")) {
+      const indexerValue = model.indexer!.value;
+      return code`Record<string, ${this.emitter.emitTypeReference(indexerValue)}>`;
+    }
     return this.modelDeclaration(model, name);
   }
 

packages/compiler/test/emitter-framework/typescript-emitter.ts

@@ -0,0 +1,7 @@
+require("@typespec/eslint-config-typespec/patch/modern-module-resolution");
+
+module.exports = {
+  plugins: ["@typespec/eslint-plugin"],
+  extends: ["@typespec/eslint-config-typespec", "plugin:@typespec/eslint-plugin/recommended"],
+  parserOptions: { tsconfigRootDir: __dirname },
+};

packages/json-schema/.eslintrc.cjs

@@ -0,0 +1,7 @@
+timeout: 5000
+require: source-map-support/register
+spec: "dist/test/**/*.test.js"
+ignore: "dist/test/manual/**/*.js"
+
+# Config for https://www.npmjs.com/package/mocha-multi-reporters
+reporterOptions: "configFile=mocha.reporter.config.json"