Use Flow & prettier

.flowconfig

@@ -0,0 +1,9 @@
+[ignore]
+
+[include]
+
+[libs]
+
+[lints]
+
+[options]

.npmignore

@@ -0,0 +1,33 @@
+# Logs
+logs
+*.log
+
+# Runtime data
+pids
+*.pid
+*.seed
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (http://nodejs.org/api/addons.html)
+build/Release
+
+# Binaries downloaded upon install
+bin/elm-interface-to-json
+
+# Dependency directory
+# https://www.npmjs.org/doc/misc/npm-faq.html#should-i-check-my-node_modules-folder-into-git
+node_modules
+elm-stuff
+tmp
+
+# Specific to .npmignore
+.travis.yml
+README.md

.travis.yml

@@ -47,6 +47,7 @@ install:
 
 script:
   - elm-format --validate src tests examples readme-example
+  - flow check
   - cd examples
   - elm-make --output=/dev/null --yes
   - cd ../readme-example

elm-css.js

@@ -1,26 +1,49 @@
 #!/usr/bin/env node
+//@flow
 
-var elmCss = require('./');
-var program = require('commander');
-var chalk = require('chalk');
-var pkg = require('./package.json');
+var elmCss = require("./");
+var program = require("commander");
+var chalk = require("chalk");
+var pkg = require("./package.json");
 var sourcePath = null;
 
 program
   .version(pkg.version)
-  .usage('PATH # path to your Stylesheets.elm file')
-  .option('-o, --output [outputDir]', '(optional) directory in which to write CSS file', process.cwd())
-  .option('-m, --module [moduleName]', '(optional) name of stylesheets module in your project', null, 'Stylesheets')
-  .option('-p, --port [portName]', '(optional) name of the port from which to read CSS results', null, 'files')
-  .option('-r, --root [projectDir]', '(optional) root directory of the project', process.cwd())
-  .option('-e, --pathToMake [pathToMake]', '(optional) path to elm-make')
+  .usage("PATH # path to your Stylesheets.elm file")
+  .option(
+    "-o, --output [outputDir]",
+    "(optional) directory in which to write CSS file",
+    process.cwd()
+  )
+  .option(
+    "-m, --module [moduleName]",
+    "(optional) name of stylesheets module in your project",
+    null,
+    "Stylesheets"
+  )
+  .option(
+    "-p, --port [portName]",
+    "(optional) name of the port from which to read CSS results",
+    null,
+    "files"
+  )
+  .option(
+    "-r, --root [projectDir]",
+    "(optional) root directory of the project",
+    process.cwd()
+  )
+  .option("-e, --pathToMake [pathToMake]", "(optional) path to elm-make")
   .action(function(src) {
     sourcePath = src;
   })
   .parse(process.argv);
 
-if(!sourcePath) {
-  console.log(chalk.red("You must specifiy a path to your Stylesheets.elm file. See the README for information on how to build a Stylesheets.elm file."));
+if (!sourcePath) {
+  console.log(
+    chalk.red(
+      "You must specifiy a path to your Stylesheets.elm file. See the README for information on how to build a Stylesheets.elm file."
+    )
+  );
   program.outputHelp();
   process.exit(1);
 }
@@ -32,12 +55,18 @@ elmCss(
   program.module,
   program.port,
   program.pathToMake
-).then(function (results) {
-  console.log(chalk.green('Successfully generated output! The following css files were created: '));
-  results.forEach(function (result) {
-    console.log(chalk.blue('- ' + result.filename));
+)
+  .then(function(results) {
+    console.log(
+      chalk.green(
+        "Successfully generated output! The following css files were created: "
+      )
+    );
+    results.forEach(function(result) {
+      console.log(chalk.blue("- " + result.filename));
+    });
+  })
+  .catch(function(error) {
+    console.log(chalk.red(error));
+    process.exit(1);
   });
-}).catch(function (error) {
-  console.log(chalk.red(error));
-  process.exit(1);
-});

package.json

@@ -32,7 +32,7 @@
   "dependencies": {
     "chalk": "1.1.1",
     "commander": "2.9.0",
-    "node-elm-compiler": "2.3.2",
+    "node-elm-compiler": "4.3.3",
     "tmp": "0.0.28"
   },
   "devDependencies": {