musescore-downloader/src/gm.ts
2020-12-06 12:32:13 -05:00

22 lines
790 B
TypeScript

/**
* UserScript APIs
*/
declare const GM: {
/** https://www.tampermonkey.net/documentation.php#GM_info */
info: Record<string, any>;
/** https://www.tampermonkey.net/documentation.php#GM_registerMenuCommand */
registerMenuCommand (name: string, fn: () => any, accessKey?: string): Promise<number>;
/** https://github.com/Tampermonkey/tampermonkey/issues/881#issuecomment-639705679 */
addElement<K extends keyof HTMLElementTagNameMap> (tagName: K, properties: Record<string, any>): Promise<HTMLElementTagNameMap[K]>;
}
export const _GM = (typeof GM === 'object' ? GM : undefined) as GM
type GM = typeof GM
export const isGmAvailable = (requiredMethod: keyof GM = 'info'): boolean => {
return typeof GM !== 'undefined' &&
typeof GM[requiredMethod] !== 'undefined'
}