preferred-node-version/build/src/load.js

Get the preferred Node.js version of a project or user

import{readFile}from"node:fs/promises";
import{basename}from"node:path";

import{loadNodeEnvRc}from"./nodeenv.js";
import{loadPackageJson}from"./package.js";


export const loadVersionFile=async(filePath)=>{
const content=await safeReadFile(filePath);
const contentA=content.trim();

if(contentA===""){
return
}

const filename=basename(filePath);
const loadFunction=LOAD_FUNCTIONS[filename];

if(loadFunction===undefined){
throw new Error(
`Option "files" is invalid: ${filename}
Allowed values are: ${NODE_VERSION_FILES.join(", ")}`
)
}

const rawVersion=loadFunction(contentA);
return rawVersion
};


const safeReadFile=async(path)=>{
try{
return await readFile(path,"utf8")
}catch{
return""
}
};


const identity=(content)=>content;



const LOAD_FUNCTIONS={

".n-node-version":identity,

".naverc":identity,

".node-version":identity,

".nodeenvrc":loadNodeEnvRc,

".nvmrc":identity,

"package.json":loadPackageJson
};
export const NODE_VERSION_FILES=Object.keys(LOAD_FUNCTIONS);