ES

eval() but

• isolated from global object
• customizable API
• able to be prepared once, executed multiple times

Examples

Basic arithmetics

es('1+1') // returns 2

Isolation:

let a = 2
es('a + 1') // throws EsError: a is not defined

Custom API:

let a = 2
es('a + 1', { customAPIs: { a } }) // returns 3

Prepared statements:

let a = 0
const prepared = new ES('a + 1', { args: { a } })
a = 2
prepared.execute({ args: { a }}) // returns 3
a = 3
prepared.execute({ args: { a }}) // returns 4