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@kitmi/jacaranda

v3.4.4

Published

JavaScript application framework

Downloads

285

Readme

@kitmi/jacaranda

JavaScript Application Framework

@kitmi/jacaranda is a rich-feature JavaScript CLI application and http server application framework with plugable features. It supports to run by both node.js and bun.sh, and switch between koa.js (stable) and hono.js (high performance) as the http engine freely.

Philosophy

  • Every top-level node in the configuration file is a feature.
  • Every feature is an injected dependency.
  • A feature can register a service (recommended) or extend the app prototype.
  • Features are loaded on different stages from CONF -> INIT -> SERVICE -> PLUGIN -> FINAL. They are also loaded according to their dependency relation in the same stage.
  • Features include built-in features and all custom features under the app's features directory (configurable in app options through the constructor of App or startWorker argument)
  • Configuration is environment awareness, the default one is <configName>.default.json. If the app is run under NODE_ENV=development, the <configName>.development.json if exist will override the default one.
  • Configuration can also be overridden by CONF level features.

Built-in features

  • Configuration related

    • configByGitUser
    • configByHostname
    • customConfig
  • App general

    • serviceGroup
    • i18n
    • libModules
    • featureRegistry (supports feature in node_modules)
    • jwt
    • nanoid
    • env
    • settings
    • version
  • Http client

    • fetchAgent
    • superAgent
    • superTest (for code coverage test)
  • Logger

    • logger (changed from winston to pino)
  • CLI interface

    • commandLine

Worker starters

  • general worker
  • rich args & opts cli
  • loop worker
  • mq worker (will be upgraded to remove the dependency on specific MQ lib)

Examples

See test case for more examples

1. CLI app

A command line app with a required argument and several options. It will prompt user to input the argument if user does not provide.

import { startCommand } from '@kitmi/jacaranda';

await startCommand(
    (app) => {
        const cmd = app.commandLine;

        if (cmd.option('help')) {
            cmd.showUsage();
            return;
        }

        if (cmd.option('version')) {
            console.log(app.version);
            return;
        }

        const arg1 = cmd.argv._[0];

        console.log(`Hello, ${arg1}!`);
    },
    {
        // process.env.NODE_ENV === 'development' ? 'verbose' : 'info'
        logLevel: 'info',
        commandName: cliName,
        config: {
            version: version,
            commandLine: {
                testArgs: ['-s', 'test'],
                banner: () => {
                    return `Cli description v${version}`;
                },
                program: cliName,
                arguments: [
                    {
                        name: 'argrument1',
                        required: true,
                        inquire: true, // if true, the argument will be asked in non-silense mode if not provided
                        promptMessage: 'Please enter the argument1:', // prompt message in interactive mode
                    },
                ],
                options: {
                    s: {
                        desc: 'Silent mode',
                        alias: ['silent'],
                        bool: true,
                        default: false,
                    },
                    v: {
                        desc: 'Show version information',
                        alias: ['version'],
                        bool: true,
                        default: false,
                    },
                    h: {
                        desc: 'Show usage message',
                        alias: ['help'],
                        bool: true,
                        default: false,
                    },
                },
                // conditions to make the cli run in silent mode
                silentMode: (cli) => cli.argv['silent'] || cli.argv['version'] || cli.argv['help'],
                // conditions to make the cli run without arguments validation
                nonValidationMode: (cli) => cli.argv['version'] || cli.argv['help'],
                // whether to show usage information on invalid arguments error
                showUsageOnError: true,
                // debug option to show all processed arguments
                showArgs: false,
            },
        },
    }
);

2. General worker

A seed.js for seeding prisma datasource.

import { startWorker } from '@kitmi/jacaranda';
import { fs } from '@kitmi/sys';
import { eachAsync_ } from '@kitmi/utils';
import path from 'node:path';

const initIndexFile = path.resolve(__dirname, './init/index.list');
const initDir = path.resolve(__dirname, './init');

startWorker(
    async (app) => {
        const prisma = app.getService('prisma');

        const initIndex = await fs.readFile(initIndexFile, 'utf-8');
        const files = initIndex.split('\n');

        await eachAsync_(files, async (file) => {
            const { default: init } = await import(path.join(initDir, file));
            await init(app, prisma);
        });
    },
    {
        configName: 'worker',
        logLevel: 'verbose',
        sourcePath: 'server',
    }
);

License

  • MIT
  • Copyright (c) 2023 KITMI PTY LTD