detect-shell/lib/esm/pfs.js

detect shells available on the system

var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
import fs from 'fs';
import { promisify } from 'util';
export function readFile(path, encoding) {
    return promisify(fs.readFile)(path, encoding);
}
export function stat(path) {
    return promisify(fs.stat)(path);
}
export function lstat(path) {
    return promisify(fs.lstat)(path);
}
export function readlink(path) {
    return promisify(fs.readlink)(path);
}
export function readdir(path) {
    return __awaiter(this, void 0, void 0, function* () {
        return promisify(fs.readdir)(path);
    });
}
export function dirExists(path) {
    return __awaiter(this, void 0, void 0, function* () {
        try {
            const { stat, symbolicLink } = yield statLink(path);
            return stat.isDirectory() && (symbolicLink === null || symbolicLink === void 0 ? void 0 : symbolicLink.dangling) !== true;
        }
        catch (error) {
            // Ignore, path might not exist
        }
        return false;
    });
}
export function fileExists(path) {
    return __awaiter(this, void 0, void 0, function* () {
        try {
            const { stat, symbolicLink } = yield statLink(path);
            return stat.isFile() && (symbolicLink === null || symbolicLink === void 0 ? void 0 : symbolicLink.dangling) !== true;
        }
        catch (error) {
            // Ignore, path might not exist
        }
        return false;
    });
}
export function statLink(path) {
    return __awaiter(this, void 0, void 0, function* () {
        // First stat the link
        let lstats;
        try {
            lstats = yield lstat(path);
            // Return early if the stat is not a symbolic link at all
            if (!lstats.isSymbolicLink()) {
                return { stat: lstats };
            }
        }
        catch (error) {
            /* ignore - use stat() instead */
        }
        // If the stat is a symbolic link or failed to stat, use fs.stat()
        // which for symbolic links will stat the target they point to
        try {
            const stats = yield stat(path);
            return { stat: stats, symbolicLink: (lstats === null || lstats === void 0 ? void 0 : lstats.isSymbolicLink()) ? { dangling: false } : undefined };
        }
        catch (error) {
            // If the link points to a non-existing file we still want
            // to return it as result while setting dangling: true flag
            if (error.code === 'ENOENT' && lstats) {
                return { stat: lstats, symbolicLink: { dangling: true } };
            }
            throw error;
        }
    });
}
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