@nteract/fs-kernels/lib/kernelspecs.js

A manager for the filesystem aspects of Juyter kernels

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const child_process_1 = require("child_process");
const fs_1 = __importDefault(require("fs"));
const path_1 = __importDefault(require("path"));
const util_1 = require("util");
const readdir = util_1.promisify(fs_1.default.readdir);
async function mapToKernelResources(kernelSpecs) {
    const resources = {};
    for (const name of Object.keys(kernelSpecs)) {
        const kernelSpec = kernelSpecs[name];
        const files = await readdir(kernelSpec.resource_dir);
        resources[name] = {
            name,
            files: files.map(file => path_1.default.join(kernelSpec.resource_dir, file)),
            resource_dir: kernelSpec.resource_dir,
            spec: kernelSpec.spec
        };
    }
    return resources;
}
/**
 * find a kernel by name
 * @param kernelName the kernel to locate
 * @return kernelResource object
 */
async function find(kernelName) {
    return (await findAll())[kernelName];
}
exports.find = find;
/**
 * Get an array of kernelResources objects for the host environment
 * This matches the Jupyter notebook API for kernelspecs exactly
 * @return Promise for an array of kernelResources objects
 */
async function findAll() {
    return new Promise((resolve, reject) => {
        child_process_1.exec("python3 -m jupyter kernelspec list --json", async (err, stdout) => {
            if (err) {
                reject(err);
            }
            else {
                const kernelSpecs = JSON.parse(stdout).kernelspecs;
                const resources = await mapToKernelResources(kernelSpecs);
                resolve(resources);
            }
        });
    });
}
exports.findAll = findAll;