chore: remove legacy .nodemon support

As part of a semi-clean up from bump to 3.x

.prettierrc.json

@@ -0,0 +1,3 @@
+{
+ "singleQuote": true
+}

faq.md

@@ -238,6 +238,8 @@ For example, on `lib/app.js` being changed:
 
 ## My .nodemonignore is being ignored
 
+_The legacy `.nodemonignore` was dropped in nodemon@3_
+
 The new `nodemon.json` supersedes the `.nodemonignore` file, so if you have both, the `.nodemonignore` is not used at all.
 
 Note that if you have a `nodemon.json` in your `$HOME` path, then this will also supersede the old ignore file (and the _legacy_ format config is ignored).
@@ -336,7 +338,7 @@ nodemon --ext '*' --watch public --exec 'python -m SimpleHTTPServer'
 
 Based on [this issue](https:/remy/nodemon/issues/2056).
 
-Sometimes when using the `--inspect` flag, nodemon will try to start the a process before the old process is finished. 
+Sometimes when using the `--inspect` flag, nodemon will try to start the a process before the old process is finished.
 
 This will cause an error trying to up the new process because of the debugger service:
 

lib/config/load.js

@@ -16,8 +16,10 @@ var existsSync = fs.existsSync || path.existsSync;
 function findAppScript() {
  // nodemon has been run alone, so try to read the package file
  // or try to read the index.js file
-
- var pkg = existsSync(path.join(process.cwd(), 'package.json')) && require(path.join(process.cwd(), 'package.json'));
+
+ var pkg =
+ existsSync(path.join(process.cwd(), 'package.json')) &&
+ require(path.join(process.cwd(), 'package.json'));
  if ((!pkg || pkg.main == undefined) && existsSync('./index.js')) {
  return 'index.js';
  }
@@ -64,7 +66,6 @@ function load(settings, options, config, callback) {
  options.ignore = defaults.ignore.concat(options.ignore);
  }
 
-
  // add in any missing defaults
  options = utils.merge(options, defaults);
 
@@ -76,11 +77,14 @@ function load(settings, options, config, callback) {
  }
  // if the script is found as a result of not being on the command
  // line, then we move any of the pre double-dash args in execArgs
- const n = options.scriptPosition === null ?
- options.args.length : options.scriptPosition;
-
- options.execArgs = (options.execArgs || [])
- .concat(options.args.splice(0, n));
+ const n =
+ options.scriptPosition === null
+ ? options.args.length
+ : options.scriptPosition;
+
+ options.execArgs = (options.execArgs || []).concat(
+ options.args.splice(0, n)
+ );
  options.scriptPosition = null;
 
  options.script = found;
@@ -104,53 +108,11 @@ function load(settings, options, config, callback) {
  normaliseRules(options, callback);
  };
 
- // if we didn't pick up a nodemon.json file & there's no cli ignores
- // then try loading an old style .nodemonignore file
- if (config.loaded.length === 0) {
- var legacy = loadLegacyIgnore.bind(null, options, config, ready);
-
- // first try .nodemonignore, if that doesn't exist, try nodemon-ignore
- return legacy('.nodemonignore', function () {
- legacy('nodemon-ignore', function (options) {
- ready(options);
- });
- });
- }
-
  ready(options);
  });
  });
 }
 
-/**
- * Loads the old style nodemonignore files which is a list of patterns
- * in a file to ignore
- *
- * @param {Object} options nodemon user options
- * @param {Function} success
- * @param {String} filename ignore file (.nodemonignore or nodemon-ignore)
- * @param {Function} fail (optional) failure callback
- */
-function loadLegacyIgnore(options, config, success, filename, fail) {
- var ignoreFile = path.join(process.cwd(), filename);
-
- exists(ignoreFile, function (exists) {
- if (exists) {
- config.loaded.push(ignoreFile);
- return parse(ignoreFile, function (error, rules) {
- options.ignore = rules.raw;
- success(options);
- });
- }
-
- if (fail) {
- fail(options);
- } else {
- success(options);
- }
- });
-}
-
 function normaliseRules(options, ready) {
  // convert ignore and watch options to rules/regexp
  rules.watch.add(options.watch);
@@ -172,7 +134,7 @@ function normaliseRules(options, ready) {
  */
 function loadFile(options, config, dir, ready) {
  if (!ready) {
- ready = function () { };
+ ready = function () {};
  }
 
  var callback = function (settings) {
@@ -224,29 +186,32 @@ function loadFile(options, config, dir, ready) {
 
 function loadPackageJSON(config, ready) {
  if (!ready) {
- ready = () => { };
+ ready = () => {};
  }
 
  const dir = process.cwd();
  const filename = path.join(dir, 'package.json');
  const packageLoadOptions = { configFile: filename };
- return loadFile(packageLoadOptions, config, dir, settings => {
+ return loadFile(packageLoadOptions, config, dir, (settings) => {
  ready(settings.nodemonConfig || {});
  });
 }
 
 function mutateExecOptions(options) {
  // work out the execOptions based on the final config we have
- options.execOptions = exec({
- script: options.script,
- exec: options.exec,
- args: options.args,
- scriptPosition: options.scriptPosition,
- nodeArgs: options.nodeArgs,
- execArgs: options.execArgs,
- ext: options.ext,
- env: options.env,
- }, options.execMap);
+ options.execOptions = exec(
+ {
+ script: options.script,
+ exec: options.exec,
+ args: options.args,
+ scriptPosition: options.scriptPosition,
+ nodeArgs: options.nodeArgs,
+ execArgs: options.execArgs,
+ ext: options.ext,
+ env: options.env,
+ },
+ options.execMap
+ );
 
  // clean up values that we don't need at the top level
  delete options.scriptPosition;