1.23.1

example.js
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			var genfun = require('./')

			var multiply = function(a, b) {
			return a * b
			}

			var addAndMultiplyNumber = function(val) {
			var fn = genfun()
			('function(n) {')
			('if (typeof n !== "number") {') // ending a line with { will indent the source
			('throw new Error("argument should be a number")')
			('}')
			('var result = multiply(%d, n+%d)', val, val)
			('return result')
			('}')

			// use fn.toString() if you want to see the generated source

			return fn.toFunction({
			multiply: multiply
			})
			}

			var addAndMultiply2 = addAndMultiplyNumber(2)

			console.log(addAndMultiply2.toString())
			console.log('(3 + 2) * 2 =', addAndMultiply2(3))