create-svelte: add svelte-check for TS

.changeset/seven-bags-sniff.md

@@ -0,0 +1,5 @@
+---
+'create-svelte': patch
+---
+
+Add svelte-check to TS templates

packages/create-svelte/bin.js

@@ -184,8 +184,8 @@ function write_common_files(cwd, options) {
 	const pkg = /** @type {any} */ (JSON.parse(fs.readFileSync(pkg_file, 'utf-8')));
 
 	files.forEach((file) => {
-		const include = file.include.every((condition) => options[condition]);
-		const exclude = file.exclude.some((condition) => options[condition]);
+		const include = file.include.every((condition) => matchesCondition(condition, options));
+		const exclude = file.exclude.some((condition) => matchesCondition(condition, options));
 
 		if (exclude || !include) return;
 
@@ -205,6 +205,17 @@ function write_common_files(cwd, options) {
 	fs.writeFileSync(pkg_file, JSON.stringify(pkg, null, '  '));
 }
 
+/**
+ * @param {import('./types/internal').Condition} condition
+ * @param {import('./types/internal').Options} options
+ * @returns {boolean}
+ */
+function matchesCondition(condition, options) {
+	return condition === 'default' || condition === 'skeleton'
+		? options.template === condition
+		: options[condition];
+}
+
 /**
  * @param {any} target
  * @param {any} source

packages/create-svelte/shared/+default+typescript/package.json

@@ -0,0 +1,5 @@
+{
+	"devDependencies": {
+		"@types/cookie": "^0.4.0"
+	}
+}

packages/create-svelte/shared/+typescript/package.json

@@ -1,7 +1,12 @@
 {
+	"scripts": {
+		"check": "svelte-check --tsconfig ./tsconfig.json",
+		"check:watch": "svelte-check --tsconfig ./tsconfig.json --watch"
+	},
 	"devDependencies": {
 		"typescript": "^4.0.0",
 		"tslib": "^2.0.0",
+		"svelte-check": "^1.6.0",
 		"svelte-preprocess": "^4.0.0"
 	}
 }

packages/create-svelte/types/internal.d.ts

@@ -10,11 +10,13 @@ export type File = {
 	contents: string;
 };
 
+export type Condition = 'eslint' | 'prettier' | 'typescript' | 'skeleton' | 'default';
+
 export type Common = {
 	files: Array<{
 		name: string;
-		include: Array<'eslint' | 'prettier' | 'typescript'>;
-		exclude: Array<'eslint' | 'prettier' | 'typescript'>;
+		include: Array<Condition>;
+		exclude: Array<Condition>;
 		contents: string;
 	}>;
 };