59 lines
1.3 KiB
TypeScript
59 lines
1.3 KiB
TypeScript
import {readFile, readdir, writeFile, statSync} from 'fs'
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import {resolve, join} from 'path'
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const log = (err: Error) => console.log(err);
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const isFile = (f: string) => statSync(f).isFile();
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const write = (fName: string, str: string) => new Promise((res, rej) => {
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writeFile(resolve(fName), str, (err: Error) => {
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if (err) return rej(err)
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return res(str)
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})
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});
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const readFolder = (folder: string) => new Promise((res, rej) => {
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readdir(resolve(folder), (err, files) => {
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if (err) rej(err)
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const fileList = files.map(f => join(folder, f));
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res(fileList.filter(isFile));
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})
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});
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const read = (fName: string) => new Promise((res, rej) => {
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readFile(resolve(fName), (err, str) => {
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if (err) rej(err)
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res(str)
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})
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});
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const concat = (files: string[]) => new Promise((res, rej) => {
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return Promise.all(files.map(read))
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.then(src => res(src.join('\n')))
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.catch(rej);
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});
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export = (folder: string[] | string, outFile?: string) => new Promise((res, rej) => {
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let concatenated;
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if(typeof folder === 'string') {
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concatenated = readFolder(folder)
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.then(concat);
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} else {
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concatenated = concat(folder);
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}
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if (outFile) {
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concatenated.then((out: string) => write(outFile, out)
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.then(res)
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.catch(rej)
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).catch(rej);
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} else {
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concatenated.then(res).catch(rej);
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}
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});
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