Initial commit.

Author: coreh

.gitignore

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+node_modules

README.md

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+# js 
+
+**js** is a a better alternative to `node -p`. It will automatically convert data from and to JSON string representations, and will automatically expose enviroment variables as globals preceded with `$`.
+
+## Usage
+
+```bash
+js <javascript>
+```
+
+## Examples
+
+Using math
+
+```bash
+js 2+2
+```
+
+Read a field from a JSON file
+
+```bash
+js stdin.version < package.json
+```
+
+Add a field to a JSON file on the fly
+
+```bash
+js 'stdin.foo = "bar", stdin' < in.json > out.json
+```

bin/js

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+#!/usr/bin/env node
+
+var fs = require('fs');
+var path = require('path');
+var program = require('commander');
+
+program
+  .version(JSON.parse(fs.readFileSync(path.join(__dirname, '../package.json'), 'utf-8')).version)
+  .usage('<javascript>')
+  .option('-r, --raw', 'do not attempt to convert data from JSON')
+  .parse(process.argv);
+
+var stdin = "";
+
+if (!process.stdin.isTTY) {
+  process.stdin.resume();
+  process.stdin.setEncoding('utf8');
+  process.stdin.on('data', function(chunk) {
+    stdin += chunk;
+  })
+  process.stdin.on('end', start);
+} else {
+  start();
+}
+
+function start() {
+  if (!program.raw) {
+    // attempt to interpret stdin as JSON
+    try {
+      stdin = JSON.parse(stdin);
+    } catch (e) {
+      // ignore
+    }
+  }
+  
+  // expose environment variables as globals preceded with $
+  for (var name in process.env) {
+    var value = process.env[name];
+
+    if (!program.raw) {
+      // attempt to interpret variable as JSON
+      try {
+        value = JSON.parse(value);
+      } catch (e) {
+        // ignore
+      }
+    }
+
+    global['$' + name] = value;
+  }
+    
+  var result = eval('(' + (program.args.join(' ') || 'undefined') + ')');
+  
+  if (typeof result == 'string') {
+    if (result[result.length - 1] != '\n') {
+      result = result + '\n';
+    }
+  } else {
+    try {
+      result = JSON.stringify(result, null, 2) + '\n';
+    } catch (e) {
+      // ignore
+    }
+  }
+  
+  process.stdout.write(result);
+}

package.json

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+{
+  "name": "js",
+  "description": "A better `node -p`.",
+  "author": "Marco Aurelio <[email protected]>",
+  "version": "0.0.1",
+  "bin": {
+    "js": "./bin/js"
+  },
+  "dependencies": {
+    "commander": "~1.1.1"
+  }
+}