Created
December 1, 2019 20:52
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| export function useCacheable<T, H>( | |
| filePath: PathLike, | |
| promiseFunction: (args: H) => Promise<T> | |
| ): (args: H) => Promise<T> { | |
| return async (...args: [H]) => { | |
| createFileIfNoteExist(filePath) | |
| return new Promise(resolve => { | |
| return promiseFunction(...args).then( | |
| value => { | |
| if (!isEmpty(value)) { | |
| writeFile(filePath, value, err => { | |
| if (err) { | |
| throw err | |
| } | |
| }) | |
| resolve(value) | |
| } | |
| return value | |
| }, | |
| _rejected => { | |
| readFile(filePath, (err, data) => { | |
| const output = JSON.parse(data.toString('utf8')) | |
| resolve(output) | |
| }) | |
| } | |
| ) | |
| }) | |
| } | |
| } |
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