valid-schema/cleanse.js at master · Colingo/valid-schema · GitHub

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module.exports = cleanse

var Hash = require("./hash")
var List = require("./list")
var Type = require("./type")

var builtins = [
    [String, Type("string")]
    , [Boolean, Type("boolean")]
    , [Object, Type("object")]
    , [Number, Type("number")]
]

function cleanse(validator) {
    if (Array.isArray(validator)) {
        return List(validator[0])
    } else if (typeof validator === "object") {
        return Hash(validator)
    }

    for (var i = 0; i < builtins.length; i++) {
        var tuple = builtins[i]

        if (tuple[0] === validator) {
            return tuple[1]
        }
    }

    if (typeof validator === "function") {
        return validator
    }

    return equal

    function equal(x) {
        if (x !== validator) {
            return x + " is not equal to " + validator
        }
    }
}