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jsprim: utilities for primitive JavaScript types

This module provides miscellaneous facilities for working with strings, numbers, dates, and objects and arrays of these basic types.

deepCopy(obj)

Creates a deep copy of a primitive type, object, or array of primitive types.

isEmpty(obj)

Returns true if the given object has no properties and false otherwise. This is O(1) (unlike Object.keys(obj).length === 0, which is O(N)).

forEachKey(obj, callback)

Like Array.forEach, but iterates properties of an object rather than elements of an array. Equivalent to:

for (var key in obj)
        callback(key, obj[key]);

startsWith(str, prefix)

Returns true if the given string starts with the given prefix and false otherwise.

endsWith(str, suffix)

Returns true if the given string ends with the given suffix and false otherwise.

iso8601(date)

Converts a Date object to an ISO8601 date string of the form "YYYY-MM-DDTHH:MM:SS.sssZ". This format is not customizable.

validateJsonObject(schema, object)

Uses JSON validation (via JSV) to validate the given object against the given schema. On success, returns null. On failure, returns (does not throw) a useful Error object.

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