hereby/dist/cli/runner.js

A simple task runner

import pc from "picocolors";
export class Runner {
    constructor(_d) {
        this._d = _d;
        this._addedTasks = new Map();
        this._errored = false;
        this._startTimes = new Map();
    }
    async runTasks(...tasks) {
        // Using allSettled here so that we don't immediately exit; it could be
        // the case that a task has code that needs to run before, e.g. a
        // cleanup function in a "finally" or something.
        const results = await Promise.allSettled(tasks.map((task) => {
            const cached = this._addedTasks.get(task);
            if (cached) {
                return cached;
            }
            const promise = this._runTask(task);
            this._addedTasks.set(task, promise);
            return promise;
        }));
        for (const result of results) {
            if (result.status === "rejected") {
                throw result.reason;
            }
        }
    }
    async _runTask(task) {
        const { dependencies, run } = task.options;
        if (dependencies) {
            await this.runTasks(...dependencies);
        }
        if (!run) {
            return;
        }
        try {
            this.onTaskStart(task);
            await run();
            this.onTaskFinish(task);
        }
        catch (e) {
            this.onTaskError(task, e);
            throw e;
        }
    }
    onTaskStart(task) {
        this._startTimes.set(task, Date.now());
        if (this._errored) {
            return; // Skip logging.
        }
        this._d.log(`Starting ${pc.blue(task.options.name)}`);
    }
    onTaskFinish(task) {
        if (this._errored) {
            return; // Skip logging.
        }
        const took = Date.now() - this._startTimes.get(task);
        this._d.log(`Finished ${pc.green(task.options.name)} in ${this._d.prettyMilliseconds(took)}`);
    }
    onTaskError(task, e) {
        if (this._errored) {
            return; // Skip logging.
        }
        this._errored = true;
        const took = Date.now() - this._startTimes.get(task);
        this._d.error(`Error in ${pc.red(task.options.name)} in ${this._d.prettyMilliseconds(took)}\n${e}`);
    }
}
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