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lib: replace var with let/const

PR-URL: #30440
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
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Kenza Houmani authored and MylesBorins committed Nov 12, 2019
1 parent 793d360 commit bd853cc709422542f32ba1d9b04476a1d38b588f
Showing with 27 additions and 41 deletions.
  1. +27 −41 lib/internal/modules/cjs/loader.js
@@ -153,7 +153,7 @@ Module.builtinModules = builtinModules;
Module._cache = Object.create(null);
Module._pathCache = Object.create(null);
Module._extensions = Object.create(null);
var modulePaths = [];
let modulePaths = [];
Module.globalPaths = [];

let patched = false;
@@ -341,7 +341,7 @@ function toRealPath(requestPath) {

// Given a path, check if the file exists with any of the set extensions
function tryExtensions(p, exts, isMain) {
for (var i = 0; i < exts.length; i++) {
for (let i = 0; i < exts.length; i++) {
const filename = tryFile(p + exts[i], isMain);

if (filename) {
@@ -474,22 +474,22 @@ Module._findPath = function(request, paths, isMain) {
if (entry)
return entry;

var exts;
var trailingSlash = request.length > 0 &&
let exts;
let trailingSlash = request.length > 0 &&
request.charCodeAt(request.length - 1) === CHAR_FORWARD_SLASH;
if (!trailingSlash) {
trailingSlash = /(?:^|\/)\.?\.$/.test(request);
}

// For each path
for (var i = 0; i < paths.length; i++) {
for (let i = 0; i < paths.length; i++) {
// Don't search further if path doesn't exist
const curPath = paths[i];
if (curPath && stat(curPath) < 1) continue;
var basePath = resolveExports(curPath, request, absoluteRequest);
var filename;
const basePath = resolveExports(curPath, request, absoluteRequest);
let filename;

var rc = stat(basePath);
const rc = stat(basePath);
if (!trailingSlash) {
if (rc === 0) { // File.
if (!isMain) {
@@ -556,9 +556,7 @@ if (isWindows) {
return [from + 'node_modules'];

const paths = [];
var p = 0;
var last = from.length;
for (var i = from.length - 1; i >= 0; --i) {
for (let i = from.length - 1, p = 0, last = from.length; i >= 0; --i) {
const code = from.charCodeAt(i);
// The path segment separator check ('\' and '/') was used to get
// node_modules path for every path segment.
@@ -597,9 +595,7 @@ if (isWindows) {
// to be absolute. Doing a fully-edge-case-correct path.split
// that works on both Windows and Posix is non-trivial.
const paths = [];
var p = 0;
var last = from.length;
for (var i = from.length - 1; i >= 0; --i) {
for (let i = from.length - 1, p = 0, last = from.length; i >= 0; --i) {
const code = from.charCodeAt(i);
if (code === CHAR_FORWARD_SLASH) {
if (p !== nmLen)
@@ -744,7 +740,7 @@ Module._resolveFilename = function(request, parent, isMain, options) {
return request;
}

var paths;
let paths;

if (typeof options === 'object' && options !== null) {
if (Array.isArray(options.paths)) {
@@ -760,12 +756,12 @@ Module._resolveFilename = function(request, parent, isMain, options) {

paths = [];

for (var i = 0; i < options.paths.length; i++) {
for (let i = 0; i < options.paths.length; i++) {
const path = options.paths[i];
fakeParent.paths = Module._nodeModulePaths(path);
const lookupPaths = Module._resolveLookupPaths(request, fakeParent);

for (var j = 0; j < lookupPaths.length; j++) {
for (let j = 0; j < lookupPaths.length; j++) {
if (!paths.includes(lookupPaths[j]))
paths.push(lookupPaths[j]);
}
@@ -784,7 +780,7 @@ Module._resolveFilename = function(request, parent, isMain, options) {
const filename = Module._findPath(request, paths, isMain);
if (!filename) {
const requireStack = [];
for (var cursor = parent;
for (let cursor = parent;
cursor;
cursor = cursor.parent) {
requireStack.push(cursor.filename || cursor.id);
@@ -794,7 +790,7 @@ Module._resolveFilename = function(request, parent, isMain, options) {
message = message + '\nRequire stack:\n- ' + requireStack.join('\n- ');
}
// eslint-disable-next-line no-restricted-syntax
var err = new Error(message);
const err = new Error(message);
err.code = 'MODULE_NOT_FOUND';
err.requireStack = requireStack;
throw err;
@@ -858,7 +854,7 @@ Module.prototype.require = function(id) {

// Resolved path to process.argv[1] will be lazily placed here
// (needed for setting breakpoint when called with --inspect-brk)
var resolvedArgv;
let resolvedArgv;
let hasPausedEntry = false;

// Run the file contents in the correct scope or sandbox. Expose
@@ -928,7 +924,7 @@ Module.prototype._compile = function(content, filename) {
compiledWrapper = compiled.function;
}

var inspectorWrapper = null;
let inspectorWrapper = null;
if (getOptionValue('--inspect-brk') && process._eval == null) {
if (!resolvedArgv) {
// We enter the repl if we're not given a filename argument.
@@ -947,7 +943,7 @@ Module.prototype._compile = function(content, filename) {
}
const dirname = path.dirname(filename);
const require = makeRequireFunction(this, redirects);
var result;
let result;
const exports = this.exports;
const thisValue = exports;
const module = this;
@@ -1090,26 +1086,16 @@ function createRequire(filename) {
Module.createRequire = createRequire;

Module._initPaths = function() {
var homeDir;
var nodePath;
if (isWindows) {
homeDir = process.env.USERPROFILE;
nodePath = process.env.NODE_PATH;
} else {
homeDir = safeGetenv('HOME');
nodePath = safeGetenv('NODE_PATH');
}
const homeDir = isWindows ? process.env.USERPROFILE : safeGetenv('HOME');
const nodePath = isWindows ? process.env.NODE_PATH : safeGetenv('NODE_PATH');

// $PREFIX/lib/node, where $PREFIX is the root of the Node.js installation.
var prefixDir;
// process.execPath is $PREFIX/bin/node except on Windows where it is
// $PREFIX\node.exe.
if (isWindows) {
prefixDir = path.resolve(process.execPath, '..');
} else {
prefixDir = path.resolve(process.execPath, '..', '..');
}
var paths = [path.resolve(prefixDir, 'lib', 'node')];
// $PREFIX\node.exe where $PREFIX is the root of the Node.js installation.
const prefixDir = isWindows ?
path.resolve(process.execPath, '..') :
path.resolve(process.execPath, '..', '..');

let paths = [path.resolve(prefixDir, 'lib', 'node')];

if (homeDir) {
paths.unshift(path.resolve(homeDir, '.node_libraries'));
@@ -1143,7 +1129,7 @@ Module._preloadModules = function(requests) {
throw e;
}
}
for (var n = 0; n < requests.length; n++)
for (let n = 0; n < requests.length; n++)
parent.require(requests[n]);
};

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