@ehmicky/dev-tasks/build/src/watch.js

Automated development tasks for my own projects

import gulp from"gulp";
import renameFn from"rename-fn";








export const getWatchTask=(files,firstArg,secondArg)=>{
const[watchOptions,task]=parseOptions(firstArg,secondArg);

const watchTask=startWatch.bind(undefined,files,watchOptions,task);

addName(watchTask,task);
addDescription(watchTask,task);

return watchTask
};




const parseOptions=(firstArg,secondArg)=>{
if(typeof firstArg!=="object"||firstArg===null){
return[DEFAULT_WATCH_OPTIONS,firstArg]
}

return[{...DEFAULT_WATCH_OPTIONS,...firstArg},secondArg]
};

const DEFAULT_WATCH_OPTIONS={ignoreInitial:false};

const startWatch=(files,watchOptions,task)=>{


gulp.watch(files,watchOptions,task);





return Promise.resolve()
};




const addName=(watchTask,task)=>{
const name=getName(task);
renameFn(watchTask,name)
};

const getName=(task)=>{
if(typeof task!=="function"||INVALID_NAMES.has(task.name)){
return"watch"
}

return`watch ${task.name}`
};

const INVALID_NAMES=new Set(["","parallel","series","watch"]);


const addDescription=(watchTask,task)=>{
if(typeof task!=="function"||typeof task.description!=="string"){
return
}


watchTask.description=`${task.description} (watch mode)`
};