@hirosystems/clarinet-sdk/dist/esm/node/src/vfs.js

A SDK to interact with Clarity Smart Contracts in node.js

import * as fs from "node:fs/promises";
import path from "node:path";
function fileArrayToString(bufferArray) {
    return Array.from(bufferArray)
        .map((item) => String.fromCharCode(item))
        .join("");
}
function isValidReadEvent(e) {
    return typeof e?.path === "string";
}
function isValidReadManyEvent(e) {
    return Array.isArray(e?.paths) && e.paths.every((s) => typeof s === "string");
}
function isValidWriteEvent(e) {
    return typeof e?.path === "string" && Array.isArray(e?.content);
}
async function exists(event) {
    if (!isValidReadEvent(event))
        throw new Error("invalid read event");
    try {
        await fs.stat(event.path);
        return true;
    }
    catch {
        return false;
    }
}
async function readFile(event) {
    if (!isValidReadEvent(event))
        throw new Error("invalid read event");
    return fileArrayToString(await fs.readFile(event.path));
}
async function readFiles(event) {
    if (!isValidReadManyEvent(event))
        throw new Error("invalid read event");
    const files = await Promise.all(event.paths.map(async (p) => {
        try {
            return fs.readFile(p);
        }
        catch (err) {
            console.warn(err);
            return null;
        }
    }));
    return Object.fromEntries(files.reduce((acc, f, i) => {
        if (f === null)
            return acc;
        return acc.concat([[event.paths[i], fileArrayToString(f)]]);
    }, []));
}
async function writeFile(event) {
    if (!isValidWriteEvent(event))
        throw new Error("invalid write event");
    const dir = path.dirname(event.path);
    if (dir !== ".")
        await fs.mkdir(dir, { recursive: true });
    return fs.writeFile(event.path, Uint8Array.from(event.content));
}
export function vfs(action, data) {
    if (action === "vfs/exists")
        return exists(data);
    if (action === "vfs/readFile")
        return readFile(data);
    if (action === "vfs/readFiles")
        return readFiles(data);
    if (action === "vfs/writeFile")
        return writeFile(data);
    throw new Error("invalid vfs action");
}
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