run on local

Author: sambaiz

README.md

@@ -2,30 +2,34 @@
 
 Boilerplate for running Headless-Chrome by [Puppeteer](https://github.com/GoogleChrome/puppeteer) on AWS Lambda.
 
+## Run on local
+
+By executing `npm run local`, you can check the operation while actually viewing the chrome. (non-headless, slowmo)
+
 ## Packaging & Deploy
 
 Lambda's memory is set to 384 MB or more.
 
-### chrome in package (recommend)
+### chrome in package (recommended)
 
 Run `npm run package`, and deploy the package.zip.
 
 ### chrome NOT in package
 
-Due to the large size of Chrome, it may exceed the [Lambda package size limit](http://docs.aws.amazon.com/lambda/latest/dg/limits.html) (50 MB) depending on the other module to include. 
+Due to the large size of Chrome, it may exceed the [Lambda package size limit](http://docs.aws.amazon.com/lambda/latest/dg/limits.html) (50MB) depending on the other module to include. 
 In that case, put Chrome in S3 and download it at container startup so startup time will be longer.
 
 Run `npm run package-nochrome`, deploy the package.zip, and set following env valiables on Lambda.
 
 - `CHROME_BUCKET`(required): S3 bucket where Chrome is put
-- `CHROME_KEY`(optional): S3 key. default: headless_shell.tar.gz
+- `CHROME_KEY`(optional): S3 key. default: `headless_shell.tar.gz`
 
 ## Build Headless-Chrome (optional)
 
 If you want to use latest chrome, run chrome/buildChrome.sh on EC2 having at least 16GB memory and 30GB volume. 
 See also [serverless-chrome](https://github.com/adieuadieu/serverless-chrome/blob/master/chrome/README.md).
-Once you build it, link to headless_shell.tar.gz in /chrome.
+Once you build it, link to `headless_shell.tar.gz` in `chrome` dir.
 
-## Reference
+## Article
 
-[記事](https://www.sambaiz.net/article/132/)
+[PuppeteerでHeadless Chromeを動かすコードをLambdaで実行する - sambaiz-net](https://www.sambaiz.net/article/132/)

package-lock.json

@@ -3,7 +3,8 @@
     "package": "npm run package-ready && cp chrome/headless_shell.tar.gz dist && cd dist && zip -rq ../package.zip .",
     "package-nochrome": "npm run package-ready && zip -rq ../package.zip .",
     "package-ready": "npm run babel && cp -r package.json dist && cd dist && PUPPETEER_SKIP_CHROMIUM_DOWNLOAD=1 npm install --production",
-    "babel": "rm -rf dist && mkdir dist && ./node_modules/.bin/babel src --out-dir dist"
+    "babel": "rm -rf dist && mkdir dist && ./node_modules/.bin/babel src --out-dir dist",
+    "local": "npm run babel && cp -r node_modules dist && node dist/local.js"
   },
   "dependencies": {
     "puppeteer": "^0.10.2",

package.json

@@ -3,21 +3,22 @@ const puppeteer = require('puppeteer'),
       util = require('./util');
 
 exports.handler = async (event, context, callback) => {
-  run().then(
+  exports.run({
+    headless: true,
+    chromePath: await util.setupChrome()
+  }).then(
     (result) => { callback(null, result); }
   ).catch(
     (err)    => { callback(err); }
   )
 }
 
-
-const run = async () => {
-
-  const chromePath = await util.setupChrome();
+exports.run = async (option) => {
 
   const browser = await puppeteer.launch({
-    headless: true,
-    executablePath: chromePath,
+    headless: option.headless,
+    executablePath: option.chromePath,
+    slowMo: option.slowMoMs,
     args: config.launchOptionForLambda,
     dumpio: !!util.DEBUG,
   });  
@@ -29,4 +30,4 @@ const run = async () => {
   browser.close();
 
   return 'done'
-}
+}

src/index.js

@@ -0,0 +1,11 @@
+const index = require('./index');
+
+index.run({
+    headless: false,
+    slowMoMs: 250,
+    // use chrome installed by puppeteer
+}).then(
+    (result) => { console.log(result); }
+).catch(
+    (err)    => { console.error(err); }
+);