[flow] A minimal demonstration of flow in action

This commit is contained in:
Lyubomir Marinov 2017-02-01 13:37:44 -06:00
parent 06ff02c2a5
commit f6c914f6f0
2 changed files with 8 additions and 4 deletions

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@ -1,3 +1,5 @@
/* @flow */
/**
* Alphanumeric characters.
* @const
@ -18,7 +20,7 @@ const HEX_DIGITS = '0123456789abcdef';
* @returns {string} A string of random alphanumeric characters with the
* specified length.
*/
export function randomAlphanumString(length) {
export function randomAlphanumString(length: number) {
return _randomString(length, ALPHANUM);
}
@ -28,7 +30,7 @@ export function randomAlphanumString(length) {
* @param {Array|string} arr - Source.
* @returns {Array|string} Array element or string character.
*/
export function randomElement(arr) {
export function randomElement(arr: Array<any> | string) {
return arr[randomInt(0, arr.length - 1)];
}
@ -48,7 +50,7 @@ export function randomHexDigit() {
* @returns {string} A string of random hexadecimal digits with the specified
* length.
*/
export function randomHexString(length) {
export function randomHexString(length: number) {
return _randomString(length, HEX_DIGITS);
}
@ -59,7 +61,7 @@ export function randomHexString(length) {
* @param {number} max - The maximum value for the generated number.
* @returns {number} Random int number.
*/
export function randomInt(min, max) {
export function randomInt(min: number, max: number) {
return Math.floor(Math.random() * (max - min + 1)) + min;
}

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@ -1,3 +1,5 @@
/* @flow */
import { randomElement } from './randomUtil';
/*