Inside Internal Utility Functions

The inside module provides commonly used internal utility functions for component development.

List of Functions

bem(name, props, fixed?, change?) => string | string[]

Generates component class names in accordance with the BEM (Block Element Modifier) specification, facilitating CSS style management.

Parameters

Parameter Name	Type	Required	Default	Description
name	string	Yes	-	Component name
props	object	Yes	-	Component properties object
fixed	string[]	Yes	-	Fixed class names that exist
change	string[]	No	-	Variable class names array

Return Value

Type	Description
string | string[]	BEM specification class name string (WeChat Mini Program) or array (Alipay/Toutiao)

Example

import { bem } from '@hy-app/ui';

const props = {
    type: 'primary',
    size: 'large',
    plain: true,
};

const fixed = ['type', 'size'];
const result = bem('button', props, fixed);
console.log(result);
// 'hy-button--primary hy-button--size hy-button--type__plain'

---

error(err) => void

Displays error message prompts in the development environment, and only outputs when NODE_ENV === 'development'.

Parameters

Parameter Name	Type	Required	Default	Description
err	string	Yes	-	Error content

Return Value

Type	Description
void	No return value

Example

import { error } from '@hy-app/ui';

error('This is an error prompt');
// Huayue Component Prompt: This is an error prompt

---

sleep(value?) => Promise<void>

Delays function execution, returns a Promise object, and can be used with await for waiting.

Parameters

Parameter Name	Type	Required	Default	Description
value	number	No	100	Delay milliseconds

Return Value

Type	Description
Promise<void>	Promise object, usable with await

Example

import { sleep } from '@hy-app/ui';

await sleep(1000);
console.log('Executed after 1 second');

await sleep();
console.log('Executed after 100ms');

---

guid(length?, firstU?, radix?) => string

Generates a globally unique identifier, with the first letter being replaced with 'u' to ensure it can be used as an id or class.

Parameters

Parameter Name	Type	Required	Default	Description
length	number | null	No	32	Length of the guid
firstU	boolean	No	true	First letter should be "u"
radix	number	No	62	Base used for generation

Return Value

Type	Description
string	Globally unique identifier

Example

import { guid } from '@hy-app/ui';

const id = guid();
console.log(id);