FM / static-eval

/var/www/greso.tech/server/nsm/node_modules/static-eval/

/var/www/greso.tech/server/nsm/node_modules/static-eval

Name	Size	Mode	Actions
example/	-	0755	rm
node_modules/	-	0755	rm
test/	-	0755	rm
.travis.yml	48	0644	edit dl rm
index.js	4278	0644	edit dl rm
LICENSE	1073	0644	edit dl rm
package.json	909	0644	edit dl rm
readme.markdown	1744	0644	edit dl rm

Edit: /var/www/greso.tech/server/nsm/node_modules/static-eval/index.js (4278B)

var unparse = require('escodegen').generate;

module.exports = function (ast, vars) {
    if (!vars) vars = {};
    var FAIL = {};
    
    var result = (function walk (node) {
        if (node.type === 'Literal') {
            return node.value;
        }
        else if (node.type === 'UnaryExpression'){
            var val = walk(node.argument)
            if (node.operator === '+') return +val
            if (node.operator === '-') return -val
            if (node.operator === '~') return ~val
            if (node.operator === '!') return !val
            return FAIL
        }
        else if (node.type === 'ArrayExpression') {
            var xs = [];
            for (var i = 0, l = node.elements.length; i < l; i++) {
                var x = walk(node.elements[i]);
                if (x === FAIL) return FAIL;
                xs.push(x);
            }
            return xs;
        }
        else if (node.type === 'ObjectExpression') {
            var obj = {};
            for (var i = 0; i < node.properties.length; i++) {
                var prop = node.properties[i];
                var value = prop.value === null
                    ? prop.value
                    : walk(prop.value)
                ;
                if (value === FAIL) return FAIL;
                obj[prop.key.value || prop.key.name] = value;
            }
            return obj;
        }
        else if (node.type === 'BinaryExpression' ||
                 node.type === 'LogicalExpression') {
            var l = walk(node.left);
            if (l === FAIL) return FAIL;
            var r = walk(node.right);
            if (r === FAIL) return FAIL;
            
            var op = node.operator;
            if (op === '==') return l == r;
            if (op === '===') return l === r;
            if (op === '!=') return l != r;
            if (op === '!==') return l !== r;
            if (op === '+') return l + r;
            if (op === '-') return l - r;
            if (op === '*') return l * r;
            if (op === '/') return l / r;
            if (op === '%') return l % r;
            if (op === '<') return l < r;
            if (op === '<=') return l <= r;
            if (op === '>') return l > r;
            if (op === '>=') return l >= r;
            if (op === '|') return l | r;
            if (op === '&') return l & r;
            if (op === '^') return l ^ r;
            if (op === '&&') return l && r;
            if (op === '||') return l || r;
            
            return FAIL;
        }
        else if (node.type === 'Identifier') {
            if ({}.hasOwnProperty.call(vars, node.name)) {
                return vars[node.name];
            }
            else return FAIL;
        }
        else if (node.type === 'CallExpression') {
            var callee = walk(node.callee);
            if (callee === FAIL) return FAIL;
            
            var ctx = node.callee.object ? walk(node.callee.object) : FAIL;
            if (ctx === FAIL) ctx = null;

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