Convert to JS

args-parser.js

@@ -0,0 +1,81 @@
+const data = require('caniuse-db/data.json');
+const path = require('path');
+const osHomedir = require('os-homedir');
+const yargs = require('yargs');
+
+module.exports = yargs
+  .option('short', {
+    alias: 's',
+    type: 'boolean',
+    default: undefined,
+    describe: "Short output: show browsers on one line and don't display notes or description (default when displaying multiple results)"
+  }).option('long', {
+    alias: 'l',
+    type: 'boolean',
+    default: undefined,
+    describe: "Long output: show more information (default when displaying a single result)"
+  }).option('oneline', {
+    alias: '1',
+    type: 'boolean',
+    default: false,
+    describe: "One-line output: just global percentages, no per-browser info"
+  }).option('oneline-browser', {
+    alias: '2',
+    type: 'boolean',
+    default: false,
+    describe: "One-line output with browser info, implies --abbrev and --current"
+  }).option('abbrev', {
+    alias: 'a',
+    type: 'boolean',
+    default: false,
+    describe: "Abbreviate browser names"
+  }).option('percentages', {
+    alias: 'p',
+    type: 'boolean',
+    default: false,
+    describe: "Include browser version usage percentages"
+  }).option('future', {
+    alias: 'f',
+    type: 'boolean',
+    default: false,
+    describe: "Include future browser versions"
+  }).option('current', {
+    alias: 'c',
+    type: 'boolean',
+    default: false,
+    describe: "Don't include old browser versions, equivalent to --era e0"
+  }).option('era', {
+    alias: 'e',
+    type: 'string',
+    describe: `How many versions back to go, e0 to ${Object.keys(data.eras)[0]}`
+  }).option('mobile', {
+    alias: 'm',
+    type: 'boolean',
+    default: false,
+    describe: "Include mobile browsers"
+  }).option('desktop', {
+    alias: 'd',
+    type: 'boolean',
+    default: true,
+    describe: "Include desktop browsers"
+  }).option('browser', {
+    alias: 'b',
+    type: 'string',
+    describe: `Show results for these browsers, comma-separated (${Object.keys(data.agents)})`
+  }).option('ascii', {
+    alias: 'A',
+    type: 'boolean',
+    default: false,
+    describe: "UTF-8 symbols replacement with ASCII description"
+  }).option('web', {
+    alias: 'w',
+    type: 'boolean',
+    default: false,
+    describe: "Go to the search page on caniuse.com"
+  }).option('config', {
+    alias: 'C',
+    type: 'string',
+    default: path.join(osHomedir(), '.caniuse.json'),
+    describe: "Specify a config file with default options"
+  }).config('config')
+  .help('help');

bin.js

@@ -1,3 +1,2 @@
 #!/usr/bin/env node
-require('coffee-script/register');
-require('./caniuse.coffee');
+require('./caniuse-cli.js');

caniuse-cli.js

@@ -0,0 +1,12 @@
+const argsParser = require('./args-parser');
+const { toStreams } = require('./caniuse.decaffeinate');
+
+const {
+  argv
+} = argsParser;
+
+if (argv.web) {
+  return open(`http://caniuse.com/#search=${encodeURIComponent(argv._.join(' '))}`);
+}
+
+toStreams(argv);