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eol-last.md

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Require file to end with single newline (eol-last)

(fixable) The --fix option on the command line automatically fixes problems reported by this rule.

Trailing newlines in non-empty files are a common UNIX idiom. Benefits of trailing newlines include the ability to concatenate or append to files as well as output files to the terminal without interfering with shell prompts.

Rule Details

This rule requires at least one newline at the end of non-empty files.

Prior to v0.16.0 this rule also enforced that there was only a single line at the end of the file. If you still want this behaviour, consider enabling no-multiple-empty-lines with maxEOF and/or no-trailing-spaces.

Examples of incorrect code for this rule:

/*eslint eol-last: "error"*/

function doSmth() {
  var foo = 2;
}

Examples of correct code for this rule:

/*eslint eol-last: "error"*/

function doSmth() {
  var foo = 2;
}

Options

This rule has a string option:

  • "unix" (default) enforces line feed (LF) as newline
  • "windows" enforces carriage return line feed (CRLF) as newline