generate-function
Module that helps you write generated functions in Node
npm install generate-function
Disclamer
Writing code that generates code is hard. You should only use this if you really, really, really need this for performance reasons (like schema validators / parsers etc).
Usage
const genfun =const d = genfunformats{const gen =return gen // will compile the function}const add2 =consoleconsole // prints the generated function
If you need to close over variables in your generated function pass them to toFunction(scope)
{return a * b}{const gen =// use gen.toString() if you want to see the generated sourcereturn gen}const addAndMultiply2 =consoleconsole
You can call gen(src)
as many times as you want to append more source code to the function.
Variables
If you need a unique safe identifier for the scope of the generated function call str = gen.sym('friendlyName')
.
These are safe to use for variable names etc.
Object properties
If you need to access an object property use the str = gen.property('objectName', 'propertyName')
.
This returns 'objectName.propertyName'
if propertyName
is safe to use as a variable. Otherwise
it returns objectName[propertyNameAsString]
.
If you only pass gen.property('propertyName')
it will only return the propertyName
part safely
License
MIT