seljs - npm Package Compare versions

Comparing version 0.1.1 to 0.1.3

.travis.yml

+language: node_js
+node_js:
+  - "4.1"
+  - "4.0"

Nodes.js

@@ -21,6 +21,12 @@ "use strict";
 
+function getFromContext (ctx, prop) {
+    if (ctx === null || ctx === undefined) {
+        return null;
+    }
+    return ctx.hasOwnProperty(prop) ? ctx[prop] : null;
+}
+
 class Identifier extends Value {
     getValue (ctx) {
-        const value = ctx[this.value];
-        return value === undefined ? null : value;
+        return getFromContext(ctx, this.value);
     }
@@ -62,5 +68,3 @@ }
     getValue (ctx) {
-        const value = this.left.getValue(ctx),
-            prop = value && value[this.right.getValue(ctx)];
-        return prop === undefined ? null : prop;
+        return  getFromContext(this.left.getValue(ctx), this.right.getValue(ctx));
     }
@@ -67,0 +71,0 @@ }

package.json

 {
   "name": "seljs",
-  "version": "0.1.1",
-  "description": "Simple Expression Languaje for JavaScript",
+  "version": "0.1.3",
+  "description": "Simple Expression Language for JavaScript",
   "main": "index.js",
@@ -10,2 +10,5 @@ "repository": {
   },
+  "engines": {
+    "npm": ">=4.0.0"
+  },
   "scripts": {
@@ -12,0 +15,0 @@ "preversion": "npm test",

README.md

@@ -1,3 +0,76 @@
-# seljs
+# Simple Expression Language for JavaScript
 
-Simple Expression Language for JavaScript
+[![Build Status](https://travis-ci.org/victorherraiz/seljs.svg?branch=master)](https://travis-ci.org/victorherraiz/seljs)
+
+## Requirements:
+
+* Nodejs 4+
+
+## Install
+
+    npm install seljs --save
+
+## Features
+
+* No side effects: only and expression language
+* Fast and simple: small memory footprint
+* No dependencies
+* Simplified property access
+
+## Language features
+
+Very limited at the moment.
+
+* Basic arithmetic: Adding, subtraction, Multiplication and Division
+* Context and property access
+* Literals: Strings and integers
+* String concatenation
+
+## Work in progress
+
+* Boolean operators: And, or, equals, not equals, negate.
+* Grouping
+* null keyword
+* Functions
+* Global functions
+* Language documentation
+
+
+## Examples
+
+```js
+const seljs = require("seljs"),
+    assert = require("assert"),
+    ctx = {
+        int: 123,
+        str: "123",
+        obj: {
+            int: 321,
+            str: "321",
+            obj: {
+                deep: 333
+            }
+        }
+    };
+
+//Number literals
+assert.strictEqual(seljs("123", ctx), 123);
+
+//String literals
+assert.strictEqual(seljs("'123'", ctx), "123");
+
+//Basic arithmetic
+assert.strictEqual(seljs("1 + 3 * 2 / 4 - 1 * 2", ctx), 1 + 3 * 2 / 4 - 1 * 2);
+
+//String concatenation
+assert.strictEqual(seljs("'123' + '123'", ctx), "123123");
+
+//Context and property access
+assert.strictEqual(seljs("int + obj.int + obj.obj.deep", ctx), 123 + 321 + 333);
+
+```
+
+## License
+
+[MIT](LICENSE)
+

test.js

@@ -38,2 +38,5 @@ "use strict";
 assert.strictEqual(seljs("2 * int - 3 * 2 - int", ctx), 2 * 123 - 3 * 2 - 123);
+assert.strictEqual(seljs("str.length", ctx), 3);
+//no proto
+assert.strictEqual(seljs("str.substr", ctx), null);
 
@@ -47,6 +50,7 @@ //Null
 //cache
+assert.strictEqual(seljs.cache.clear(),  undefined);
 assert.strictEqual(seljs("1", ctx), 1);
-assert.strictEqual(seljs.cache.size,  26);
+assert.strictEqual(seljs.cache.size,  1);
 assert.strictEqual(seljs("1", ctx), 1);
-assert.strictEqual(seljs.cache.size,  26);
+assert.strictEqual(seljs.cache.size,  1);
 assert.strictEqual(seljs.cache.clear(),  undefined);
@@ -59,7 +63,11 @@ assert.strictEqual(seljs.cache.size,  0);
 function wrapper(text, ctx) {
-    return () => seljs(text, ctx);
+    return function () {
+        return seljs(text, ctx);
+    };
 }
 
 function message(text) {
-    return (error) => error.message === text;
+    return function (error) {
+        return error.message === text;
+    };
 }
@@ -66,0 +74,0 @@

No alert changes

Improved metrics

Total package byte prevSize

13753

15.09%

Number of package files

10

11.11%

Lines of code

325

3.5%

Number of lines in readme file

77

1825%

No dependency changes