be a bit smarter about building the site locally (#5262)

Co-authored-by: Antony Jones <antony@beyonk.com>

site/README.md

@@ -6,12 +6,17 @@ Set up the site sub-project:
 git clone https://github.com/sveltejs/svelte.git
 cd site
 npm ci
-npm run update
 npm run dev
 ```
 
 and navigate to [localhost:3000](http://localhost:3000).
 
+The first time you run the site locally, it will update the list of Contributors and REPL dependencies. After this it won't run again unless you force it by running:
+
+```bash
+npm run update
+```
+
 ## Running using the local copy of Svelte
 
 By default, the REPL will fetch the most recent version of Svelte from https://unpkg.com/svelte. When running the site locally, you can also use your local copy of Svelte.
@@ -25,7 +30,6 @@ npm ci
 PUBLISH=1 npm run build
 cd site
 npm ci
-npm run update
 npm run dev
 ```
 

site/package-lock.json

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@@ -2471,18 +2425,6 @@
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-      "dev": true
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@@ -2724,12 +2660,6 @@
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@@ -2852,35 +2782,6 @@
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-        "resolve": "^1.10.0",
-        "semver": "2 || 3 || 4 || 5",
-        "validate-npm-package-license": "^3.0.1"
-      }
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-        "minimatch": "^3.0.4",
-        "pidtree": "^0.3.0",
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-        "shell-quote": "^1.6.1",
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@@ -3003,16 +2904,6 @@
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@@ -3025,27 +2916,12 @@
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@@ -3204,17 +3068,6 @@
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-        "spdx-license-ids": "^3.0.0"
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@@ -3581,17 +3381,6 @@
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@@ -3629,12 +3418,6 @@
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-      "dev": true,
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site/package.json

@@ -3,11 +3,11 @@
   "version": "1.0.0",
   "description": "Docs and examples for Svelte",
   "scripts": {
-    "dev": "npm run copy-workers && sapper dev",
+    "dev": "node scripts/update.js && npm run copy-workers && sapper dev",
     "copy-workers": "node scripts/copy-workers.js",
     "migrate": "node-pg-migrate -r dotenv/config",
-    "build": "npm run copy-workers && sapper build --legacy",
+    "build": "node scripts/update.js && npm run copy-workers && sapper build --legacy",
-    "update": "node scripts/update_template.js && node scripts/get-contributors.js",
+    "update": "node scripts/update.js --force=true",
     "start": "node __sapper__/build",
     "test": "mocha -r esm test/**",
     "deploy": "make deploy"
@@ -50,7 +50,6 @@
     "mocha": "^6.2.0",
     "node-fetch": "^2.6.1",
     "node-pg-migrate": "^3.22.0",
-    "npm-run-all": "^4.1.5",
     "rollup": "^2.30.0",
     "rollup-plugin-svelte": "^7.0.0",
     "rollup-plugin-terser": "^7.0.0",

site/scripts/get_contributors.js

@@ -3,8 +3,16 @@ const fs = require('fs');
 const fetch = require('node-fetch');
 const Jimp = require('jimp');
 
+const force = process.env.FORCE_UPDATE === 'true';
+
 process.chdir(__dirname);
 
+const outputFile = `../src/routes/_contributors.js`;
+if (!force && fs.existsSync(outputFile)) {
+	console.info(`[update/contributors] ${outputFile} exists. Skipping`);
+	process.exit(0);
+}
+
 const base = `https://api.github.com/repos/sveltejs/svelte/contributors`;
 const { GITHUB_CLIENT_ID, GITHUB_CLIENT_SECRET } = process.env;
 
@@ -48,7 +56,7 @@ async function main() {
 
 	const str = `[\n\t${authors.map(a => `'${a.login}'`).join(',\n\t')}\n]`;
 
-	fs.writeFileSync(`../src/routes/_contributors.js`, `export default ${str};`);
+	fs.writeFileSync(outputFile, `export default ${str};`);
 }
 
 main();

site/scripts/update.js

@@ -0,0 +1,8 @@
+const sh = require('shelljs');
+
+sh.env['FORCE_UPDATE'] = process.argv.includes('--force=true');
+
+Promise.all([
+	sh.exec('node ./scripts/get_contributors.js'),
+	sh.exec('node ./scripts/update_template.js')
+]);

site/scripts/update_template.js

@@ -1,7 +1,16 @@
 const sh = require('shelljs');
 const fs = require('fs');
+const path = require('path');
 
-sh.cd(__dirname + '/../');
+const force = process.env.FORCE_UPDATE === 'true';
+
+sh.cd(path.join(__dirname, '..'));
+
+const outputFile = 'static/svelte-app.json';
+if (!force && fs.existsSync(outputFile)) {
+	console.info(`[update/template] ${outputFile} exists. Skipping`);
+	process.exit(0);
+}
 
 // fetch svelte app
 sh.rm('-rf','scripts/svelte-app');
@@ -22,4 +31,4 @@ for (const path of sh.find(appPath).filter(p => fs.lstatSync(p).isFile()) ) {
 	files.push({ path: path.slice(appPath.length + 1), data });
 }
 
-fs.writeFileSync('static/svelte-app.json', JSON.stringify(files));
+fs.writeFileSync(outputFile, JSON.stringify(files));