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author | Leonid Logvinov <logvinov.leon@gmail.com> | 2017-12-05 22:01:24 +0800 |
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committer | Leonid Logvinov <logvinov.leon@gmail.com> | 2017-12-05 22:01:24 +0800 |
commit | f88ecaa035352a511fbee1ff1846cdacd03ca169 (patch) | |
tree | 8510a912e3f2877274a998d95c64759ac0d518e7 /packages/0x.js/src/utils/promisify.ts | |
parent | c0cf47138ec2efe4c0a27de9a503bb0d74d99d5f (diff) | |
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Fix a comment
Diffstat (limited to 'packages/0x.js/src/utils/promisify.ts')
-rw-r--r-- | packages/0x.js/src/utils/promisify.ts | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/packages/0x.js/src/utils/promisify.ts b/packages/0x.js/src/utils/promisify.ts index 49024c0e9..c114cf32f 100644 --- a/packages/0x.js/src/utils/promisify.ts +++ b/packages/0x.js/src/utils/promisify.ts @@ -1,23 +1,23 @@ import * as _ from 'lodash'; /** - * Transforms callback-based function -- func(arg1, arg2 .. argN, callback) -- into - * an ES6-compatible Promise. Promisify provides a default callback of the form (error, result) - * and rejects when `error` is not null. You can also supply settings object as the second argument. + * Transforms callback-based function -- func(arg1, arg2 .. argN, callback) -- into an ES6-compatible Promise. + * Promisify provides a default callback of the form (error, result) and rejects when `error` is not null. You can also + * supply thisArg object as the second argument which will be passed to `apply`. */ export function promisify<T>( originalFn: ( ...args: any[], // HACK: This can't be properly typed without variadic kinds https://github.com/Microsoft/TypeScript/issues/5453 ) => void, - target?: any, + thisArg?: any, ): (...callArgs: any[]) => Promise<T> { const promisifiedFunction = async (...callArgs: any[]): Promise<T> => { return new Promise<T>((resolve, reject) => { const callback = (err: Error|null, data?: T) => { _.isNull(err) ? resolve(data) : reject(err); }; - originalFn.apply(target, [...callArgs, callback]); + originalFn.apply(thisArg, [...callArgs, callback]); }); }; return promisifiedFunction; |