TypeArray is a Proxy allowing you to define validation of values that may be set
npm install @scuba-squad/type-array``bash`
npm install @scuba-squad/type-array
Factory method to get a function to create a Typed|Validated Array
arguments:
1. validator: function | string | RegExp | Array
2.
returns: Function
throws: TypeError
`javascript`
const TypeArray = require('@scuba-squad/type-array');
const NumberArray = TypeArray((value) => {
return typeof value === 'number';
});
const test = NumberArray(1, 5.4, -9);
console.log(test.length); // 3
console.log(test[0]); // 1
test.push(0); // 4
console.log(test[3]); // 0
test.shift(); // 3
console.log(test[0]); // 5.4
test.push('5'); // TypeError: invalid value
`javascript`
const TypeArray = require('@scuba-squad/type-array');
const NumberArray = TypeArray('isFloat');
const test = NumberArray(1, 5.4, -9);
console.log(test.length); // 3
console.log(test[0]); // 1
test.push(0); // 4
console.log(test[3]); // 0
test.shift(); // 3
console.log(test[0]); // 5.4
test.push('5'); // 4 (value is castable to float so passes isFloat validation)
test.push('asd'); // TypeError: invalid value
`javascript`
const TypeArray = require('@scuba-squad/type-array');
const NumberArray = TypeArray(/^-?\d+(?:\.\d+)?$/);
const test = NumberArray(1, 5.4, -9);
console.log(test.length); // 3
console.log(test[0]); // 1
test.push(0); // 4
console.log(test[3]); // 0
test.shift(); // 3
console.log(test[0]); // 5.4
test.push('5'); // 4 (value passes validation)
test.push('asd'); // TypeError: invalid value
`javascript`
const TypeArray = require('@scuba-squad/type-array');
const NumberArray = TypeArray(['isFloat', {min: -10, max: 10}]);
const test = NumberArray(1, 5.4, -9);
console.log(test.length); // 3
console.log(test[0]); // 1
test.push(0); // 4
console.log(test[3]); // 0
test.shift(); // 3
console.log(test[0]); // 5.4
test.push('5'); // 4 (value is castable to float so passes isFloat validation)
test.push(11); // TypeError: invalid value
Function to create a predefined ErrorArray
arguments:
1. ...args: Error
returns: Array
throws: TypeError
`javascript`
const {ErrorArray} = require('@scuba-squad/type-array');
const test = ErrorArray(new Error('a'));
console.log(test.length); // 1
console.log(test[0]); // Error: a
test.push(new TypeError('invalid'));
console.log(test[1]); // TypeError: invalid
test.push('hello'); // TypeError: value must be an Error
Function to create a predefined FunctionArray
arguments:
1. ...args: Function
returns: Array
throws: TypeError
`javascript`
const {FunctionArray} = require('@scuba-squad/type-array');
const test = FunctionArray(Number);
console.log(test.length); // 1
console.log(test[0]); // [Function: Number]
test.push(() => {});
console.log(test[1]); // [Function]
test.push('hello'); // TypeError: value must be a Function
Function to create a predefined PromiseArray
arguments:
1. ...args: Promise
returns: Array
throws: TypeError
`javascript`
const {PromiseArray} = require('@scuba-squad/type-array');
const test = PromiseArray(Promise.resolve(5));
console.log(test.length); // 1
console.log(test[0]); // Promise { 5 }
test.push(Promise.reject('fail'));
console.log(test[1]); // Promise {
test.push('hello'); // TypeError: value must be a Promise
bash
npm install
npm test
``