map-file

Map a file into another file in Node.js

npm install map-file

API

mapFile({from, to, map=identity}, callback=done)

• from is the reading filename
  • supports relative or absolute
• to is the writing filename
  • supports relative or absolute
  • makes nonexistent directories via fs.mkdir
• map is the function you use to map the content
  • default returns the original text
• callback is a function to call after mapping
  • default throws errors and logs success

Usage

constmapFile=require("map-file")

Copy file

mapFile({from: "original.css",to: "copy.css",})

Trim file

mapFile({from: "example.css",to: "example.css",map: text=>text.trim(),})

Slice file

mapFile({from: "full.md",to: "summary.md",map: text=>text.slice(0,200),})

Callback

mapFile({from: "source.txt",to: "target.txt",map: text=>text,},err=>{if(err)throwerr// ...})