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eval
[![NPM version][npm-image]][npm-url] [![Build Status][test-image]][test-url] [![Coverage Status][coverage-image]][coverage-url]
Alias for [
eval][mdn-eval] global.
bash
npm install @stdlib/utils-eval
javascript
var evil = require( '@stdlib/utils-eval' );
#### evil( str )
Alias for [eval][mdn-eval] global.
javascript
var v = evil( '5*4*3*2*1' );
// returns 120
eval][mdn-eval] is treated differently by the compiler. For example, when evaluating code containing block-scoped declarations (e.g., let, const, function, class), the compiler may throw an error complaining that block-scoped declarations are not yet supported outside of strict mode. One possible workaround is to include "use strict"; in the evaluated code, as done in the example below.
javascript
var evil = require( '@stdlib/utils-eval' );
var ctors;
var fcn;
var i;
function compile( ctor ) {
var name;
var str;
name = ctor.match( /^(\w*)Array$/ )[ 1 ];
name += 'DataArray';
str = '';
str += '(function create(){';
str += '"use strict";';
str += 'class '+name+' extends '+ctor+'{';
str += 'constructor(x){';
str += 'super(x);';
str += '}';
str += '}';
str += 'return '+name+';';
str += '})();';
return str;
}
ctors = [
'Int8Array',
'Uint8Array',
'Uint8ClampedArray',
'Int16Array',
'Uint16Array',
'Int32Array',
'Uint32Array',
'Float32Array',
'Float64Array',
'Array'
];
for ( i = 0; i < ctors.length; i++ ) {
fcn = evil( compile( ctors[i] ) );
console.log( fcn.toString() );
}
@stdlib/utils-eval-cli][@stdlib/utils-eval-cli]: CLI package for use as a command-line utility.
