add install command

bin/cmd.js

@@ -12,22 +12,27 @@ var pkg = JSON.parse(
 );
 var build = require("../lib/build");
 var serve = require("../lib/serve");
+var install = require("../lib/install");
 
 program.version(pkg.version);
 
 const stringBooleanToBoolean = val => {
-  console.log({val});
-  if (typeof val !== 'string' && (val !== 'true' || val !== 'false')) {
+  console.log({ val });
+  if (typeof val !== "string" && (val !== "true" || val !== "false")) {
     throw Error(`Incorrect string value: ${val}`);
   }
 
-  return val === 'true';
+  return val === "true";
 };
 
 program
   .option("-c --config <webpack-config>", "additional webpack configuration")
   .option("-p --port <port>", "port to serve from (default: 9000)")
-  .option("-b --babelrc <babelrc>", "use .babelrc in root (default: true)", stringBooleanToBoolean)
+  .option(
+    "-b --babelrc <babelrc>",
+    "use .babelrc in root (default: true)",
+    stringBooleanToBoolean
+  )
   .option(
     "-t --timeout <timeout>",
     "function invocation timeout in seconds (default: 10)"
@@ -47,13 +52,13 @@ program
         static,
         Number(program.timeout) || 10
       );
-    }
+    };
     if (static) {
       startServer();
       return; // early terminate, don't build
-    };
-    const { config: userWebpackConfig, babelrc: useBabelrc = true} = program;
-    build.watch(cmd, { userWebpackConfig, useBabelrc}, function(err, stats) {
+    }
+    const { config: userWebpackConfig, babelrc: useBabelrc = true } = program;
+    build.watch(cmd, { userWebpackConfig, useBabelrc }, function(err, stats) {
       if (err) {
         console.error(err);
         return;
@@ -75,9 +80,9 @@ program
   .action(function(cmd, options) {
     console.log("netlify-lambda: Building functions");
 
-    const { config: userWebpackConfig, babelrc: useBabelrc = true} = program;
+    const { config: userWebpackConfig, babelrc: useBabelrc = true } = program;
     build
-      .run(cmd, { userWebpackConfig, useBabelrc})
+      .run(cmd, { userWebpackConfig, useBabelrc })
       .then(function(stats) {
         console.log(stats.toString({ color: true }));
       })
@@ -87,6 +92,17 @@ program
       });
   });
 
+program
+  .command("install [dir]")
+  .description("install functions")
+  .action(function(cmd, options) {
+    console.log("netlify-lambda: installing function dependencies");
+    install.run(cmd).catch(function(err) {
+      console.error(err);
+      process.exit(1);
+    });
+  });
+
 // error on unknown commands
 // ref: https://github.com/tj/commander.js#custom-event-listeners
 program.on("command:*", function() {

lib/install.js

@@ -0,0 +1,38 @@
+const path = require("path");
+const fs = require("fs");
+const globby = require("globby");
+const cp = require("child_process");
+var conf = require("./config");
+
+function installDeps(functionDir, cb) {
+  cp.exec("npm i", { cwd: functionDir }, cb);
+}
+
+exports.run = async function(dir) {
+  let directory;
+  if (dir) {
+    var dirPath = path.join(process.cwd(), dir);
+    directory = dirPath;
+  } else {
+    var config = conf.load();
+    const functionsDir = config.build.functions || config.build.Functions;
+    if (!functionsDir) {
+      console.log("Error: no functions dir detected.");
+    }
+    const functionsPath = path.join(process.cwd(), functionsDir);
+    directory = functionsPath;
+  }
+
+  const findJSFiles = ["*/package.json", "!node_modules", "!**/node_modules"];
+  const foldersWithDeps = await globby(findJSFiles, { cwd: directory });
+
+  const folders = foldersWithDeps
+    .map(fnFolder => {
+      return fnFolder.substring(0, fnFolder.indexOf("package.json"));
+    })
+    .map(folder => {
+      installDeps(path.join(directory, folder), () => {
+        console.log(`${folder} dependencies installed`);
+      });
+    });
+};

package.json

@@ -45,6 +45,7 @@
   "devDependencies": {
     "auto-changelog": "^1.13.0",
     "gh-release": "^3.5.0",
+    "globby": "^10.0.1",
     "jest": "^23.6.0"
   }
 }