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A custom utility for classnames
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/** | |
* Concatenate the specified classNames automatically with spaces. | |
* - If the className is undefined, it is ignored. | |
* - If the className is passed as a record of {class: condition }, it returns the class only if the condition is true. | |
* | |
* @example | |
* clsx('class1', 'class2', { class: true }) // 'class1 class2 class' | |
* clsx('class1', 'class2', { class: false }) // 'class1 class2' | |
* clsx('class1', undefined) // 'class1' | |
* | |
* @param args | |
* @returns | |
*/ | |
export function clsx( | |
...args: (string | undefined | Record<string, boolean>)[] | |
): string { | |
const classes: string[] = []; | |
for (const arg of args) { | |
switch (typeof arg) { | |
case 'string': | |
classes.push(arg); | |
break; | |
case 'object': | |
for (const key in arg) { | |
if (arg[key]) { | |
classes.push(key); | |
} | |
} | |
break; | |
} | |
} | |
return classes.join(' '); | |
} |
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