Elegant, highly efficient data validation for JavaScript
Overview
- Provides concise, performant, readable, data and type validation for JavaScript apps, using built-in and user-defined data-validating pseudo types.
- Improves application efficiency and readability by unifying the most basic but common data and type validations in JavaScript apps, into single, concise, highly optimized operations.
- Employs bitwise operations, data pre-processing, and memory-efficient memoization for fast, robust performance in small and large apps and libraries.
- Ready for nodejs, requirejs, and regular script tag.
- Website – xtype.js.org
Go from this:
function searchEmployees(value) {
if (typeof value === 'string') {
if (value.trim().length > 1) {
return EmployeeDB.searchByName(value);
} else if (value.trim().length === 1) {
return EmployeeDB.searchByMiddleInitial(value);
} else {
return { error: 'Invalid search value supplied' };
}
} else if (typeof value === 'object' && value !== null) {
if (Object.keys(value).length === 1) {
return EmployeeDB.searchByFieldValuePair(value);
} else if (Object.keys(value).length > 1) {
return { error: 'Search by multiple fields not supported' };
} else {
return { error: 'Invalid search value supplied' };
}
} else if (typeof value === 'number') {
if (!isNaN(value) && isFinite(value) && value > 0 && value % 1 === 0) {
return EmployeeDB.searchByEmployeeNumber(value);
} else {
return { error: 'Invalid employee number supplied' };
}
} else if (typeof value === 'undefined' || value === null) {
return { error: 'No search value supplied' };
} else {
return { error: 'Invalid search value supplied' };
}
}To concise, performant, readable, data validation:
function searchEmployees(value) {
switch (xtype.which(value, 'str2+ str1 int+ obj1 obj2+ num nil')) {
case 'str2+':
return EmployeeDB.searchByName(value);
case 'str1':
return EmployeeDB.searchByMiddleInitial(value);
case 'int+':
return EmployeeDB.searchByEmployeeNumber(value);
case 'obj1':
return EmployeeDB.searchByFieldValuePair(value);
case 'obj2+':
return { error: 'Search by multiple fields not supported' };
case 'num':
return { error: 'Invalid employee number supplied' };
case 'nil':
return { error: 'No search value supplied' };
default:
return { error: 'Invalid search value supplied' };
}
}And even add custom validation types of your own:
xtype.ext.registerType('ssn', {
validator: function(val) {
return typeof val === 'string' && /^\d{3}-\d{2}-\d{4}$/.test(val);
}
});
function searchEmployees(value) {
switch (xtype.which(value, 'positive_integer, ssn, multi_char_string')) {
case 'positive_integer':
return EmployeeDB.searchByEmployeeNumber(value);
case 'ssn':
return EmployeeDB.searchBySSN(value);
case 'multi_char_string':
return EmployeeDB.searchByName(value);
default:
return { error: 'Invalid search value supplied' };
}
}Â
Links
Installation
See here.
Dependencies
None.
Build / Test
See here.
License
MIT license.
Website
Visit the website for usage guide, examples, API docs, and installation.