eslint-plugin-stylistic-compat/dist/rules/eol-last.js

Compatibility version of @stylistic/eslint-plugin for Node.js >= 12 and ESLint v8

'use strict';

var _endsWithInstanceProperty = require('@babel/runtime-corejs3/core-js/instance/ends-with');
var utils = require('../utils.js');
require('@babel/runtime-corejs3/core-js/object/from-entries');
require('@babel/runtime-corejs3/core-js/instance/map');
require('@babel/runtime-corejs3/core-js/instance/filter');
require('@babel/runtime-corejs3/core-js/object/entries');
require('@babel/runtime-corejs3/core-js/set');
require('@babel/runtime-corejs3/core-js/instance/flags');
require('@babel/runtime-corejs3/core-js/instance/includes');
require('@babel/runtime-corejs3/core-js/instance/starts-with');
require('../vendor.js');
require('@babel/runtime-corejs3/core-js/object/assign');
require('@babel/runtime-corejs3/core-js/object/create');
require('@babel/runtime-corejs3/core-js/object/freeze');
require('@babel/runtime-corejs3/core-js/array/is-array');
require('@babel/runtime-corejs3/core-js/instance/last-index-of');
require('@babel/runtime-corejs3/core-js/instance/slice');
require('@babel/runtime-corejs3/core-js/object/define-properties');
require('@babel/runtime-corejs3/core-js/object/keys');
require('@babel/runtime-corejs3/core-js/instance/index-of');
require('@babel/runtime-corejs3/core-js/instance/at');
require('@babel/runtime-corejs3/core-js/symbol');
require('@babel/runtime-corejs3/core-js/symbol/iterator');
require('@babel/runtime-corejs3/core-js/parse-int');
require('@babel/runtime-corejs3/core-js/parse-float');
require('@babel/runtime-corejs3/core-js/weak-map');
require('@babel/runtime-corejs3/core-js/object/define-property');
require('@babel/runtime-corejs3/core-js/global-this');
require('@babel/runtime-corejs3/core-js/instance/for-each');
require('@babel/runtime-corejs3/core-js/array/from');
require('eslint/use-at-your-own-risk');
require('eslint');
require('@babel/runtime-corejs3/core-js/object/get-own-property-descriptor');
require('@babel/runtime-corejs3/core-js/map');
require('@babel/runtime-corejs3/core-js/instance/some');
require('@babel/runtime-corejs3/core-js/instance/find');
require('@babel/runtime-corejs3/core-js/instance/every');
require('@babel/runtime-corejs3/core-js/instance/sort');
require('@babel/runtime-corejs3/core-js/array/of');
require('@babel/runtime-corejs3/core-js/instance/concat');
require('@babel/runtime-corejs3/core-js/instance/entries');
require('@babel/runtime-corejs3/core-js/instance/find-index');
require('@babel/runtime-corejs3/core-js/instance/flat');
require('@babel/runtime-corejs3/core-js/instance/keys');
require('@babel/runtime-corejs3/core-js/instance/values');
require('@babel/runtime-corejs3/core-js/object/get-own-property-names');
require('@babel/runtime-corejs3/core-js/number/is-finite');
require('@babel/runtime-corejs3/core-js/number/is-nan');
require('@babel/runtime-corejs3/core-js/number/parse-float');
require('@babel/runtime-corejs3/core-js/number/parse-int');
require('@babel/runtime-corejs3/core-js/object/is');
require('@babel/runtime-corejs3/core-js/object/is-extensible');
require('@babel/runtime-corejs3/core-js/object/is-frozen');
require('@babel/runtime-corejs3/core-js/object/is-sealed');
require('@babel/runtime-corejs3/core-js/object/values');
require('@babel/runtime-corejs3/core-js/string/from-code-point');
require('@babel/runtime-corejs3/core-js/string/raw');
require('@babel/runtime-corejs3/core-js/instance/code-point-at');
require('@babel/runtime-corejs3/core-js/instance/pad-end');
require('@babel/runtime-corejs3/core-js/instance/pad-start');
require('@babel/runtime-corejs3/core-js/instance/trim');
require('@babel/runtime-corejs3/core-js/instance/trim-end');
require('@babel/runtime-corejs3/core-js/instance/trim-left');
require('@babel/runtime-corejs3/core-js/instance/trim-right');
require('@babel/runtime-corejs3/core-js/instance/trim-start');
require('@babel/runtime-corejs3/core-js/symbol/for');
require('@babel/runtime-corejs3/core-js/symbol/key-for');
require('@babel/runtime-corejs3/core-js/object/prevent-extensions');
require('@babel/runtime-corejs3/core-js/object/seal');
require('@babel/runtime-corejs3/core-js/object/get-prototype-of');
require('@babel/runtime-corejs3/core-js/symbol/replace');
require('@babel/runtime-corejs3/core-js/instance/bind');
require('@babel/runtime-corejs3/core-js/instance/splice');
require('@babel/runtime-corejs3/core-js/instance/repeat');
require('@babel/runtime-corejs3/core-js/instance/reduce');
require('@babel/runtime-corejs3/core-js/instance/reverse');

var eolLast = utils.createRule({
  name: "eol-last",
  package: "js",
  meta: {
    type: "layout",
    docs: {
      description: "Require or disallow newline at the end of files"
    },
    fixable: "whitespace",
    schema: [{
      type: "string",
      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) {
    return {
      Program: function checkBadEOF(node) {
        const sourceCode = context.sourceCode;
        const src = sourceCode.getText();
        const lastLine = sourceCode.lines[sourceCode.lines.length - 1];
        const location = {
          column: lastLine.length,
          line: sourceCode.lines.length
        };
        const LF = "\n";
        const CRLF = `\r${LF}`;
        const endsWithNewline = _endsWithInstanceProperty(src).call(src, LF);
        if (!src.length) return;
        let mode = context.options[0] || "always";
        let appendCRLF = false;
        if (mode === "unix") {
          mode = "always";
        }
        if (mode === "windows") {
          mode = "always";
          appendCRLF = true;
        }
        if (mode === "always" && !endsWithNewline) {
          context.report({
            node,
            loc: location,
            messageId: "missing",
            fix(fixer) {
              return fixer.insertTextAfterRange([0, src.length], appendCRLF ? CRLF : LF);
            }
          });
        } else if (mode === "never" && endsWithNewline) {
          const secondLastLine = sourceCode.lines[sourceCode.lines.length - 2];
          context.report({
            node,
            loc: {
              start: {
                line: sourceCode.lines.length - 1,
                column: secondLastLine.length
              },
              end: {
                line: sourceCode.lines.length,
                column: 0
              }
            },
            messageId: "unexpected",
            fix(fixer) {
              const finalEOLs = /(?:\r?\n)+$/u;
              const match = finalEOLs.exec(sourceCode.text);
              const start = match.index;
              const end = sourceCode.text.length;
              return fixer.replaceTextRange([start, end], "");
            }
          });
        }
      }
    };
  }
});

module.exports = eolLast;