%PDF-
%PDF-
Mini Shell
Mini Shell
/**
* @fileoverview Require or disallow newline at the end of files
* @author Nodeca Team <https://github.com/nodeca>
*/
"use strict";
//------------------------------------------------------------------------------
// Rule Definition
//------------------------------------------------------------------------------
/** @type {import('../shared/types').Rule} */
module.exports = {
meta: {
type: "layout",
docs: {
description: "require or disallow newline at the end of files",
recommended: false,
url: "https://eslint.org/docs/rules/eol-last"
},
fixable: "whitespace",
schema: [
{
enum: ["always", "never", "unix", "windows"]
}
],
messages: {
missing: "Newline required at end of file but not found.",
unexpected: "Newline not allowed at end of file."
}
},
create(context) {
//--------------------------------------------------------------------------
// Public
//--------------------------------------------------------------------------
return {
Program: function checkBadEOF(node) {
const sourceCode = context.getSourceCode(),
src = sourceCode.getText(),
lastLine = sourceCode.lines[sourceCode.lines.length - 1],
location = {
column: lastLine.length,
line: sourceCode.lines.length
},
LF = "\n",
CRLF = `\r${LF}`,
endsWithNewline = src.endsWith(LF);
/*
* Empty source is always valid: No content in file so we don't
* need to lint for a newline on the last line of content.
*/
if (!src.length) {
return;
}
let mode = context.options[0] || "always",
appendCRLF = false;
if (mode === "unix") {
// `"unix"` should behave exactly as `"always"`
mode = "always";
}
if (mode === "windows") {
// `"windows"` should behave exactly as `"always"`, but append CRLF in the fixer for backwards compatibility
mode = "always";
appendCRLF = true;
}
if (mode === "always" && !endsWithNewline) {
// File is not newline-terminated, but should be
context.report({
node,
loc: location,
messageId: "missing",
fix(fixer) {
return fixer.insertTextAfterRange([0, src.length], appendCRLF ? CRLF : LF);
}
});
} else if (mode === "never" && endsWithNewline) {
const secondLastLine = sourceCode.lines[sourceCode.lines.length - 2];
// File is newline-terminated, but shouldn't be
context.report({
node,
loc: {
start: { line: sourceCode.lines.length - 1, column: secondLastLine.length },
end: { line: sourceCode.lines.length, column: 0 }
},
messageId: "unexpected",
fix(fixer) {
const finalEOLs = /(?:\r?\n)+$/u,
match = finalEOLs.exec(sourceCode.text),
start = match.index,
end = sourceCode.text.length;
return fixer.replaceTextRange([start, end], "");
}
});
}
}
};
}
};
Zerion Mini Shell 1.0