@auttam/easycli/lib/runtime/main.js

A quick and easy way of creating cli for your npm package.

"use strict";
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());
    });
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.runProgram = exports.getContext = exports.createContext = exports.handleRejections = void 0;
const settings_1 = require("../settings");
const context_1 = require("./context");
const program_config_1 = require("../config/program-config");
var rejectionHandlerAttached = false;
const contextPropertyName = '__contextID';
const contextContainer = {};
function handleRejections(handler) {
    if (handler && typeof handler == 'function' && !rejectionHandlerAttached) {
        process.on('unhandledRejection', handler);
        rejectionHandlerAttached = true;
    }
}
exports.handleRejections = handleRejections;
function validateProgram(target) {
    if (!target) {
        throw new TypeError('Unable to create runtime context, target program is null');
    }
    if (!target.constructor) {
        throw new TypeError('Unable to create runtime context, constructor is missing');
    }
    if (!target.constructor.name) {
        throw new TypeError('Unable to create runtime context, constructor name missing');
    }
    if (target.constructor.name == 'Program') {
        throw new TypeError('Unable to create runtime context, target program is not derived from Program Class');
    }
}
function createContext(target, type) {
    validateProgram(target);
    if ((target instanceof type) == false) {
        throw new TypeError('Unable to create runtime context, target program is not an instance of Program Class');
    }
    if (target.constructor[contextPropertyName]) {
        throw new TypeError('Unable to create runtime context, context already created');
    }
    var context = new context_1.RuntimeContext(target);
    target.constructor[contextPropertyName] = target.constructor.name + context.contextId;
    contextContainer[target.constructor[contextPropertyName]] = context;
    return context;
}
exports.createContext = createContext;
function getContext(target) {
    validateProgram(target);
    if (!target.constructor[contextPropertyName]) {
        throw new TypeError('Unable to get execution context, context not created');
    }
    return contextContainer[target.constructor[contextPropertyName]];
}
exports.getContext = getContext;
function runProgram(program, context) {
    return __awaiter(this, void 0, void 0, function* () {
        handleRejections(settings_1.SettingStore.rejectionHandler);
        context = context || getContext(program);
        if (!context) {
            throw new TypeError('Cannot run program, context missing');
        }
        if (!program.constructor[contextPropertyName]
            || program.constructor[contextPropertyName].indexOf(context.contextId) < 0) {
            throw new TypeError('Cannot run program, context mismatch');
        }
        if (context.state != context_1.RuntimeStates.CREATED) {
            throw new TypeError('Cannot run program due to incorrect program state');
        }
        if (!program.config || !(program.config instanceof program_config_1.ProgramConfiguration)) {
            throw new SyntaxError('Cannot run program, configuration missing');
        }
        context.init();
        if (context.helpRequested) {
            return program.showHelp(context.requestedCommand);
        }
        if (context.versionRequested) {
            return program.showVersion();
        }
        var error, executionResult, exitCode = 0;
        try {
            executionResult = yield context.runProgram();
        }
        catch (err) {
            if (typeof err == 'string')
                err = 'Error: ' + err;
            error = err;
            exitCode = 1;
        }
        return yield context.exitProgram(error, executionResult, exitCode);
    });
}
exports.runProgram = runProgram;