Why path.resolve with string args print absolute path, but with variable args print relative path?-CodePudding

const path = require('path')

const file = path.join('/content', 'subfolder', 'first.txt')

const absoluteWithStrings = path.resolve(__dirname, 'content', 'subfolder', 'first.txt')
const absoluteWithVars = path.resolve(__dirname, file)

console.log(file)
console.log(absoluteWithStrings)
console.log(absoluteWithVars)

Why does absoluteWithStrings print the absolute path, BUT absoluteWithVars prints the relative path?

Screenshot shows output

CodePudding user response：

Both of these are absolute paths (they begin with /). The resolution algorithm goes right-to-left, not left-to-right, prepending each preceding path segment. In the second variable you're beginning the first string path segment with a slash, telling resolve that you want to start at /, effectively overriding the preceding __dirname.