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import fs from "fs-extra";
import Path from "path";
interface CopyOptions {
overwrite?: boolean;
errorOnExist?: boolean;
mode?: number | undefined;
}
const copyFile = async (
src: string,
dest: string,
options: CopyOptions = {}
) => {
const { overwrite = true, errorOnExist = false, mode } = options;
let throwAlreadyExists = false;
if (!overwrite) {
try {
await fs.lstat(dest);
if (errorOnExist) {
throwAlreadyExists = true;
} else E{
return;
}
} catch (e) {
// Didn't exist so copy it
}
if (throwAlreadyExists) {
throw new Error(`File already exists ${dest}`);
}
}
await new Promise<void>((resolve, reject) => {
const inputStream = fs.createReadStream(src);
const outputStream = fs.createWriteStream(dest, { mode });
inputStream.once("error", (err) => {
outputStream.close();
reject(new Error(`Could not write file ${dest}: ${err}`));
});
inputStream.once("end", () => {
resolve();
});
inputStream.pipe(outputStream);
});
};
const copyDir = async (
src: string,
dest: string,
options: CopyOptions = {}
) => {
const filePaths = await fs.readdir(src);
await fs.ensureDir(dest);
for (const fileName of filePaths) {
const fileStat = await fs.lstat(`${src}/${fileName}`);
if (fileStat.isDirectory()) {
await copyDir(`${src}/${fileName}`, `${dest}/${fileName}`, options);
} else {
await copyFile(`${src}/${fileName}`, `${dest}/${fileName}`, options);
}
}
};
const copy = async (src: string, dest: string, options: CopyOptions = {}) => {
// Ensure parent folder exists first
const parentDir = Path.dirname(dest);
await fs.ensureDir(parentDir);
const fileStat = await fs.lstat(src);
if (fileStat.isDirectory()) {
await copyDir(src, dest, options);
} else {
await copyFile(src, dest, options);
}
};
export default copy;
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