Output typescript declarations during build. Resolves #289.

.changeset/chilled-buckets-study.md

@@ -0,0 +1,56 @@
+---
+"generator-single-spa": major
+"ts-config-single-spa": major
+---
+
+For typescript projects, automatically emit types during `build`.
+
+# Migrating
+
+The create-single-spa api for generating new typescript projects did not change. However, to upgrade existing projects, do the following:
+
+1. Update your package.json. Make sure to replace `<%= packageManager %>` with either `npm`, `yarn`, or `pnpm`
+
+```diff
+{
+  "scripts": {
+-     "build": "webpack --mode=production",
++     "build": "concurrently <%= packageManager %>:build:*",
++     "build:webpack": "webpack --mode=production",
++     "build:types": "tsc"
+  }
+}
+```
+
+2. Update your tsconfig.json. Make sure to replace `<%= mainFile %>` with the proper value. This is in the format `org-project.ts`. React projects should have the `.tsx` file extension
+
+```diff
+{
+  "compilerOptions": {
++     "declarationDir": "dist"
+  },
++   "files": ["src/<%= mainFile %>"]
+-   "include": ["src/**/*", "node_modules/@types"],
++   "include": ["src/**/*"]
+}
+```
+
+3. Add the `"types"` property to your package.json:
+
+```diff
+{
++  "types": "dist/<%= mainFile %>.d.ts"
+}
+```
+
+4. Upgrade `ts-config-single-spa` to the latest 3.x release, which has new configuration for emitting types.
+
+```sh
+npm install --save-dev ts-config-single-spa@^3.0.0
+
+pnpm install --save-dev ts-config-single-spa@^3.0.0
+
+yarn add --dev ts-config-single-spa@^3.0.0
+```
+
+5. Now run `npm run build` or `npm run build:types` and verify that a typescript declaration file is outputted to your `dist` directory. Verify that the output file name is the same as the `"types"` property in your package.json.

packages/generator-single-spa/src/common-templates/typescript/typescript.package.json

@@ -1,4 +1,7 @@
 {
+  "scripts": {
+    "build:types": "tsc"
+  },
   "devDependencies": {
     "@babel/preset-typescript": "^7.14.5",
     "eslint-config-ts-important-stuff": "^1.1.0",
@@ -9,6 +12,7 @@
   "dependencies": {
     "@types/jest": "^26.0.23",
     "@types/systemjs": "^6.1.0",
-    "@types/webpack-env": "^1.16.0"
+    "@types/webpack-env": "^1.16.0",
+    "single-spa": "^5.9.3"
   }
 }

packages/generator-single-spa/src/react/generator-single-spa-react.js

@@ -58,6 +58,9 @@ module.exports = class SingleSpaReactGenerator extends PnpmGenerator {
     Object.assign(this.options, answers, { framework: "react" });
   }
   async createPackageJson() {
+    this.srcFileExtension = this.options.typescript ? "tsx" : "js";
+    this.mainFile = `src/${this.options.orgName}-${this.options.projectName}.${this.srcFileExtension}`;
+
     const packageJsonTemplate = await fs.readFile(
       this.templatePath("react.package.json"),
       { encoding: "utf-8" }
@@ -66,6 +69,7 @@ module.exports = class SingleSpaReactGenerator extends PnpmGenerator {
       name: `@${this.options.orgName}/${this.options.projectName}`,
       packageManager: this.options.packageManager,
       typescript: this.options.typescript,
+      mainFile: this.mainFile,
     });
 
     const packageJson = JSON.parse(packageJsonStr);
@@ -79,6 +83,8 @@ module.exports = class SingleSpaReactGenerator extends PnpmGenerator {
       delete packageJson.devDependencies["webpack-config-single-spa"];
       // Will be replaced by webpack-config-single-spa-react-ts
       delete packageJson.devDependencies["webpack-config-single-spa-ts"];
+
+      packageJson.types = `dist/${this.options.orgName}-${this.options.projectName}.d.ts`;
     }
 
     this.fs.extendJSON(this.destinationPath("package.json"), packageJson);
@@ -119,8 +125,6 @@ module.exports = class SingleSpaReactGenerator extends PnpmGenerator {
     }
   }
   async copyOtherFiles() {
-    const srcFileExtension = this.options.typescript ? "tsx" : "js";
-
     this.fs.copyTpl(
       this.templatePath("jest.config.js"),
       this.destinationPath("jest.config.js"),
@@ -168,26 +172,27 @@ module.exports = class SingleSpaReactGenerator extends PnpmGenerator {
     );
     this.fs.copyTpl(
       this.templatePath("src/root.component.js"),
-      this.destinationPath(`src/root.component.${srcFileExtension}`),
+      this.destinationPath(`src/root.component.${this.srcFileExtension}`),
       this.options
     );
     this.fs.copyTpl(
       this.templatePath("src/root.component.test.js"),
-      this.destinationPath(`src/root.component.test.${srcFileExtension}`),
+      this.destinationPath(`src/root.component.test.${this.srcFileExtension}`),
       this.options
     );
     this.fs.copyTpl(
       this.templatePath("src/main.js"),
-      this.destinationPath(
-        `src/${this.options.orgName}-${this.options.projectName}.${srcFileExtension}`
-      ),
+      this.destinationPath(this.mainFile),
       this.options
     );
     if (this.options.typescript) {
       this.fs.copyTpl(
         this.templatePath("tsconfig.json"),
         this.destinationPath("tsconfig.json"),
-        this.options
+        {
+          ...this.options,
+          mainFile: this.mainFile,
+        }
       );
     }
 

packages/generator-single-spa/src/react/templates/react.package.json

@@ -3,7 +3,8 @@
   "scripts": {
     "start": "webpack serve",
     "start:standalone": "webpack serve --env standalone",
-    "build": "webpack --mode=production",
+    "build": "concurrently <%- packageManager %>:build:*",
+    "build:webpack": "webpack --mode=production",
     "analyze": "webpack --mode=production --env analyze",
     "lint": "eslint src --ext js<% if (typescript) { %>,ts,tsx<% } %>",
     "format": "prettier --write .",

packages/generator-single-spa/src/react/templates/tsconfig.json

@@ -1,8 +1,10 @@
 {
   "extends": "ts-config-single-spa",
   "compilerOptions": {
-    "jsx": "react-jsx"
+    "jsx": "react-jsx",
+    "declarationDir": "dist"
   },
-  "include": ["src/**/*", "node_modules/@types"],
+  "files": ["<%- mainFile %>"],
+  "include": ["src/**/*"],
   "exclude": ["src/**/*.test*"]
 }

packages/generator-single-spa/src/root-config/generator-root-config.js

@@ -64,10 +64,15 @@ module.exports = class SingleSpaRootConfigGenerator extends PnpmGenerator {
       this.templatePath("root-config.package.json"),
       { encoding: "utf-8" }
     );
+
+    const srcFileExtension = this.options.typescript ? "ts" : "js";
+    const mainFile = `src/${this.options.orgName}-root-config.${srcFileExtension}`;
+
     const packageJsonStr = ejs.render(packageJsonTemplate, {
       name: `@${this.options.orgName}/root-config`,
       packageManager: this.options.packageManager,
       typescript: this.options.typescript,
+      mainFile,
     });
 
     const packageJson = JSON.parse(packageJsonStr);
@@ -79,6 +84,7 @@ module.exports = class SingleSpaRootConfigGenerator extends PnpmGenerator {
       delete packageJson.devDependencies["eslint-config-important-stuff"];
       // Will be replaced by webpack-config-single-spa-ts
       delete packageJson.devDependencies["webpack-config-single-spa"];
+      packageJson.types = `dist/${this.options.orgName}-root-config.d.ts`;
     }
 
     this.fs.extendJSON(this.destinationPath("package.json"), packageJson);
@@ -94,8 +100,6 @@ module.exports = class SingleSpaRootConfigGenerator extends PnpmGenerator {
       );
     }
 
-    const srcFileExtension = this.options.typescript ? "ts" : "js";
-
     this.fs.copyTpl(
       this.templatePath("../../common-templates/babel.config.json.ejs"),
       this.destinationPath("babel.config.json"),
@@ -136,16 +140,17 @@ module.exports = class SingleSpaRootConfigGenerator extends PnpmGenerator {
       this.fs.copyTpl(
         this.templatePath("tsconfig.json"),
         this.destinationPath("tsconfig.json"),
-        this.options
+        {
+          ...this.options,
+          mainFile,
+        }
       );
     }
 
     const parentPath = `src${this.options.layout ? "/layout" : ""}`;
     this.fs.copyTpl(
       this.templatePath(`${parentPath}/root-config.ejs`),
-      this.destinationPath(
-        `src/${this.options.orgName}-root-config.${srcFileExtension}`
-      ),
+      this.destinationPath(mainFile),
       this.options
     );
 

packages/generator-single-spa/src/root-config/templates/root-config.package.json

@@ -7,7 +7,8 @@
     "format": "prettier --write .",
     "check-format": "prettier --check .",
     "prepare": "husky install",
-    "build": "webpack --mode=production"
+    "build": "concurrently <%- packageManager %>:build:*",
+    "build:webpack": "webpack --mode=production"
   },
   "devDependencies": {
     "@babel/core": "^7.14.6",

packages/generator-single-spa/src/root-config/templates/tsconfig.json

@@ -1,5 +1,9 @@
 {
   "extends": "ts-config-single-spa",
-  "include": ["src/**/*", "node_modules/@types"],
+  "files": ["<%- mainFile %>"],
+  "compilerOptions": {
+    "declarationDir": "dist"
+  },
+  "include": ["src/**/*"],
   "exclude": ["src/**/*.test*"]
 }

packages/generator-single-spa/src/svelte/generator-single-spa-svelte.js

@@ -64,6 +64,7 @@ module.exports = class SingleSpaSvelteGenerator extends PnpmGenerator {
     );
     const packageJsonStr = ejs.render(packageJsonTemplate, {
       name: `@${this.options.orgName}/${this.options.projectName}`,
+      packageManager: this.options.packageManager,
     });
 
     const packageJson = JSON.parse(packageJsonStr);

packages/generator-single-spa/src/svelte/templates/svelte.package.json

@@ -1,7 +1,8 @@
 {
   "name": "<%= name %>",
   "scripts": {
-    "build": "rollup -c",
+    "build": "concurrently <%- packageManager %>:build:*",
+    "build:rollup": "rollup -c",
     "start": "rollup -c -w",
     "serve": "sirv dist -c",
     "test": "jest",
@@ -17,6 +18,7 @@
     "@testing-library/jest-dom": "^5.14.1",
     "@testing-library/svelte": "^3.0.3",
     "babel-jest": "^27.0.5",
+    "concurrently": "^6.2.1",
     "jest": "^27.0.5",
     "prettier": "^2.3.2",
     "prettier-plugin-svelte": "^2.3.1",

packages/generator-single-spa/src/util-module/generator-single-spa-util-module.js

@@ -80,6 +80,8 @@ module.exports = class SingleSpaUtilModuleGenerator extends PnpmGenerator {
       delete packageJson.devDependencies["eslint-config-important-stuff"];
       // Will be replaced by webpack-config-single-spa-ts
       delete packageJson.devDependencies["webpack-config-single-spa"];
+
+      packageJson.types = `dist/${this.options.orgName}-${this.options.projectName}.d.ts`;
     }
 
     this.fs.extendJSON(this.destinationPath("package.json"), packageJson);
@@ -142,19 +144,21 @@ module.exports = class SingleSpaUtilModuleGenerator extends PnpmGenerator {
       this.destinationPath("webpack.config.js"),
       this.options
     );
+    const mainFile = `src/${this.options.orgName}-${this.options.projectName}.${srcFileExtension}`;
     this.fs.copyTpl(
       this.templatePath("src/main.js"),
-      this.destinationPath(
-        `src/${this.options.orgName}-${this.options.projectName}.${srcFileExtension}`
-      ),
+      this.destinationPath(mainFile),
       this.options
     );
 
     if (this.options.typescript) {
       this.fs.copyTpl(
         this.templatePath("tsconfig.json"),
         this.destinationPath("tsconfig.json"),
-        this.options
+        {
+          ...this.options,
+          mainFile,
+        }
       );
     }
 

packages/generator-single-spa/src/util-module/templates/tsconfig.json

@@ -1,5 +1,9 @@
 {
   "extends": "ts-config-single-spa",
-  "include": ["src/**/*", "node_modules/@types"],
+  "files": ["<%= mainFile %>"],
+  "compilerOptions": {
+    "declarationDir": "dist"
+  },
+  "include": ["src/**/*"],
   "exclude": ["src/**/*.test*"]
 }

packages/generator-single-spa/src/util-module/templates/util-module.package.json

@@ -3,7 +3,8 @@
   "scripts": {
     "start": "webpack serve",
     "start:standalone": "webpack serve --env standalone",
-    "build": "webpack --mode=production",
+    "build": "concurrently pnpm:build:*",
+    "build:webpack": "webpack --mode=production",
     "analyze": "webpack --mode=production --env analyze",
     "lint": "eslint src --ext js<% if (typescript) { %>,ts,tsx<% } %>",
     "format": "prettier --write .",

packages/ts-config-single-spa/tsconfig.json

@@ -14,6 +14,7 @@
       "es2016.array.include",
       "es2018"
     ],
-    "noEmit": true
+    "declaration": true,
+    "emitDeclarationOnly": true
   }
 }