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Makefile.js
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Makefile.js
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/**
* @fileoverview Build file
* @author nzakas
*/
/* global cat, cd, cp, echo, exec, exit, find, ls, mkdir, pwd, rm, target, test*/
/* eslint no-use-before-define: "off", no-console: "off" */
"use strict";
//------------------------------------------------------------------------------
// Requirements
//------------------------------------------------------------------------------
require("shelljs/make");
const lodash = require("lodash"),
checker = require("npm-license"),
ReleaseOps = require("eslint-release"),
dateformat = require("dateformat"),
fs = require("fs"),
glob = require("glob"),
markdownlint = require("markdownlint"),
nodeCLI = require("shelljs-nodecli"),
os = require("os"),
path = require("path"),
semver = require("semver"),
ejs = require("ejs"),
loadPerf = require("load-perf"),
yaml = require("js-yaml");
//------------------------------------------------------------------------------
// Settings
//------------------------------------------------------------------------------
/*
* A little bit fuzzy. My computer has a first CPU speed of 3392 and the perf test
* always completes in < 3800ms. However, Travis is less predictable due to
* multiple different VM types. So I'm fudging this for now in the hopes that it
* at least provides some sort of useful signal.
*/
const PERF_MULTIPLIER = 13e6;
const OPEN_SOURCE_LICENSES = [
/MIT/, /BSD/, /Apache/, /ISC/, /WTF/, /Public Domain/
];
//------------------------------------------------------------------------------
// Data
//------------------------------------------------------------------------------
const NODE = "node ", // intentional extra space
NODE_MODULES = "./node_modules/",
TEMP_DIR = "./tmp/",
BUILD_DIR = "./build/",
DOCS_DIR = "../eslint.github.io/docs",
SITE_DIR = "../eslint.github.io/",
PERF_TMP_DIR = path.join(os.tmpdir(), "eslint", "performance"),
// Utilities - intentional extra space at the end of each string
MOCHA = NODE_MODULES + "mocha/bin/_mocha ",
ESLINT = NODE + " bin/eslint.js --rulesdir lib/internal-rules/ ",
// Files
MAKEFILE = "./Makefile.js",
JS_FILES = find("lib/", "conf/").filter(fileType("js")).join(" "),
JSON_FILES = find("conf/").filter(fileType("json")),
MARKDOWN_FILES_ARRAY = find("docs/").concat(ls(".")).filter(fileType("md")),
TEST_FILES = getTestFilePatterns(),
PERF_ESLINTRC = path.join(PERF_TMP_DIR, "eslintrc.yml"),
PERF_MULTIFILES_TARGET_DIR = path.join(PERF_TMP_DIR, "eslint"),
PERF_MULTIFILES_TARGETS = PERF_MULTIFILES_TARGET_DIR + path.sep + "{lib,tests" + path.sep + "lib}" + path.sep + "**" + path.sep + "*.js",
// Regex
TAG_REGEX = /^(?:Breaking|Build|Chore|Docs|Fix|New|Update|Upgrade):/,
ISSUE_REGEX = /\((?:fixes|refs) #\d+(?:.*(?:fixes|refs) #\d+)*\)$/,
// Settings
MOCHA_TIMEOUT = 10000;
//------------------------------------------------------------------------------
// Helpers
//------------------------------------------------------------------------------
/**
* Generates file patterns for test files
* @returns {string} test file patterns
* @private
*/
function getTestFilePatterns() {
const testLibPath = "tests/lib/",
testTemplatesPath = "tests/templates/";
return ls(testLibPath).filter(function(pathToCheck) {
return test("-d", testLibPath + pathToCheck);
}).reduce(function(initialValue, currentValues) {
if (currentValues !== "rules") {
initialValue.push(testLibPath + currentValues + "/**/*.js");
}
return initialValue;
}, [testLibPath + "rules/**/*.js", testLibPath + "*.js", testTemplatesPath + "*.js"]).join(" ");
}
/**
* Simple JSON file validation that relies on ES JSON parser.
* @param {string} filePath Path to JSON.
* @throws Error If file contents is invalid JSON.
* @returns {undefined}
*/
function validateJsonFile(filePath) {
const contents = fs.readFileSync(filePath, "utf8");
JSON.parse(contents);
}
/**
* Generates a function that matches files with a particular extension.
* @param {string} extension The file extension (i.e. "js")
* @returns {Function} The function to pass into a filter method.
* @private
*/
function fileType(extension) {
return function(filename) {
return filename.substring(filename.lastIndexOf(".") + 1) === extension;
};
}
/**
* Generates a static file that includes each rule by name rather than dynamically
* looking up based on directory. This is used for the browser version of ESLint.
* @param {string} basedir The directory in which to look for code.
* @returns {void}
*/
function generateRulesIndex(basedir) {
let output = "module.exports = function() {\n";
output += " var rules = Object.create(null);\n";
find(basedir + "rules/").filter(fileType("js")).forEach(function(filename) {
const basename = path.basename(filename, ".js");
output += " rules[\"" + basename + "\"] = require(\"./rules/" + basename + "\");\n";
});
output += "\n return rules;\n};";
output.to(basedir + "load-rules.js");
}
/**
* Executes a command and returns the output instead of printing it to stdout.
* @param {string} cmd The command string to execute.
* @returns {string} The result of the executed command.
*/
function execSilent(cmd) {
return exec(cmd, { silent: true }).output;
}
/**
* Generates a release blog post for eslint.org
* @param {Object} releaseInfo The release metadata.
* @returns {void}
* @private
*/
function generateBlogPost(releaseInfo) {
const output = ejs.render(cat("./templates/blogpost.md.ejs"), releaseInfo),
now = new Date(),
month = now.getMonth() + 1,
day = now.getDate(),
filename = "../eslint.github.io/_posts/" + now.getFullYear() + "-" +
(month < 10 ? "0" + month : month) + "-" +
(day < 10 ? "0" + day : day) + "-eslint-v" + releaseInfo.version +
"-released.md";
output.to(filename);
}
/**
* Generates a doc page with formatter result examples
* @param {Object} formatterInfo Linting results from each formatter
* @param {string} [prereleaseVersion] The version used for a prerelease. This
* changes where the output is stored.
* @returns {void}
*/
function generateFormatterExamples(formatterInfo, prereleaseVersion) {
const output = ejs.render(cat("./templates/formatter-examples.md.ejs"), formatterInfo);
let filename = "../eslint.github.io/docs/user-guide/formatters/index.md",
htmlFilename = "../eslint.github.io/docs/user-guide/formatters/html-formatter-example.html";
if (prereleaseVersion) {
filename = filename.replace("/docs", "/docs/" + prereleaseVersion);
htmlFilename = htmlFilename.replace("/docs", "/docs/" + prereleaseVersion);
}
output.to(filename);
formatterInfo.formatterResults.html.result.to(htmlFilename);
}
/**
* Generate a doc page that lists all of the rules and links to them
* @param {string} basedir The directory in which to look for code.
* @returns {void}
*/
function generateRuleIndexPage(basedir) {
const outputFile = "../eslint.github.io/_data/rules.yml",
categoryList = "conf/category-list.json",
categoriesData = JSON.parse(cat(path.resolve(categoryList)));
find(path.join(basedir, "/lib/rules/")).filter(fileType("js")).forEach(function(filename) {
const rule = require(filename);
const basename = path.basename(filename, ".js");
if (rule.meta.deprecated) {
categoriesData.deprecated.rules.push({
name: basename,
replacedBy: rule.meta.docs.replacedBy
});
} else {
const output = {
name: basename,
description: rule.meta.docs.description,
recommended: rule.meta.docs.recommended || false,
fixable: !!rule.meta.fixable
},
category = lodash.find(categoriesData.categories, {name: rule.meta.docs.category});
if (!category.rules) {
category.rules = [];
}
category.rules.push(output);
}
});
const output = yaml.safeDump(categoriesData, {sortKeys: true});
output.to(outputFile);
}
/**
* Creates a release version tag and pushes to origin.
* @returns {void}
*/
function release() {
const releaseInfo = ReleaseOps.release();
echo("Generating site");
target.gensite();
generateBlogPost(releaseInfo);
target.publishsite();
echo("Site has been published");
}
/**
* Creates a prerelease version tag and pushes to origin.
* @param {string} prereleaseId The prerelease identifier (alpha, beta, etc.)
* @returns {void}
*/
function prerelease(prereleaseId) {
const releaseInfo = ReleaseOps.release(prereleaseId);
echo("Generating site");
// always write docs into the next major directory (so 2.0.0-alpha.0 writes to 2.0.0)
target.gensite(semver.inc(releaseInfo.version, "major"));
generateBlogPost(releaseInfo);
echo("Site has not been pushed, please update blog post and push manually.");
}
/**
* Splits a command result to separate lines.
* @param {string} result The command result string.
* @returns {array} The separated lines.
*/
function splitCommandResultToLines(result) {
return result.trim().split("\n");
}
/**
* Gets the first commit sha of the given file.
* @param {string} filePath The file path which should be checked.
* @returns {string} The commit sha.
*/
function getFirstCommitOfFile(filePath) {
let commits = execSilent("git rev-list HEAD -- " + filePath);
commits = splitCommandResultToLines(commits);
return commits[commits.length - 1].trim();
}
/**
* Gets the tag name where a given file was introduced first.
* @param {string} filePath The file path to check.
* @returns {string} The tag name.
*/
function getTagOfFirstOccurrence(filePath) {
const firstCommit = getFirstCommitOfFile(filePath);
let tags = execSilent("git tag --contains " + firstCommit);
tags = splitCommandResultToLines(tags);
return tags.reduce(function(list, version) {
version = semver.valid(version.trim());
if (version) {
list.push(version);
}
return list;
}, []).sort(semver.compare)[0];
}
/**
* Gets the version number where a given file was introduced first.
* @param {string} filePath The file path to check.
* @returns {string} The version number.
*/
function getFirstVersionOfFile(filePath) {
return getTagOfFirstOccurrence(filePath);
}
/**
* Gets the commit that deleted a file.
* @param {string} filePath The path to the deleted file.
* @returns {string} The commit sha.
*/
function getCommitDeletingFile(filePath) {
const commits = execSilent("git rev-list HEAD -- " + filePath);
return splitCommandResultToLines(commits)[0];
}
/**
* Gets the first version number where a given file is no longer present.
* @param {string} filePath The path to the deleted file.
* @returns {string} The version number.
*/
function getFirstVersionOfDeletion(filePath) {
const deletionCommit = getCommitDeletingFile(filePath),
tags = execSilent("git tag --contains " + deletionCommit);
return splitCommandResultToLines(tags)
.map(function(version) {
return semver.valid(version.trim());
})
.filter(function(version) {
return version;
})
.sort(semver.compare)[0];
}
/**
* Returns all the branch names
* @returns {string[]} branch names
* @private
*/
function getBranches() {
const branchesRaw = splitCommandResultToLines(execSilent("git branch --list")),
branches = [];
for (let i = 0; i < branchesRaw.length; i++) {
const branchName = branchesRaw[i].replace(/^\*(.*)/, "$1").trim();
branches.push(branchName);
}
return branches;
}
/**
* Lints Markdown files.
* @param {array} files Array of file names to lint.
* @returns {Object} exec-style exit code object.
* @private
*/
function lintMarkdown(files) {
const config = {
default: true,
// Exclusions for deliberate/widespread violations
MD001: false, // Header levels should only increment by one level at a time
MD002: false, // First header should be a h1 header
MD007: { // Unordered list indentation
indent: 4
},
MD012: false, // Multiple consecutive blank lines
MD013: false, // Line length
MD014: false, // Dollar signs used before commands without showing output
MD019: false, // Multiple spaces after hash on atx style header
MD021: false, // Multiple spaces inside hashes on closed atx style header
MD024: false, // Multiple headers with the same content
MD026: false, // Trailing punctuation in header
MD029: false, // Ordered list item prefix
MD030: false, // Spaces after list markers
MD033: false, // Allow inline HTML
MD034: false, // Bare URL used
MD040: false, // Fenced code blocks should have a language specified
MD041: false // First line in file should be a top level header
},
result = markdownlint.sync({
files: files,
config: config
}),
resultString = result.toString(),
returnCode = resultString ? 1 : 0;
if (resultString) {
console.error(resultString);
}
return { code: returnCode };
}
/**
* Check if the branch name is valid
* @param {string} branchName Branch name to check
* @returns {boolean} true is branch exists
* @private
*/
function hasBranch(branchName) {
const branches = getBranches();
return branches.indexOf(branchName) !== -1;
}
/**
* Gets linting results from every formatter, based on a hard-coded snippet and config
* @returns {Object} Output from each formatter
*/
function getFormatterResults() {
const CLIEngine = require("./lib/cli-engine"),
chalk = require("chalk");
const formatterFiles = fs.readdirSync("./lib/formatters/"),
cli = new CLIEngine({
useEslintrc: false,
baseConfig: { extends: "eslint:recommended" },
rules: {
"no-else-return": 1,
indent: [1, 4],
"space-unary-ops": 2,
semi: [1, "always"],
"consistent-return": 2
}
}),
codeString = [
"function addOne(i) {",
" if (i != NaN) {",
" return i ++",
" } else {",
" return",
" }",
"};"
].join("\n"),
rawMessages = cli.executeOnText(codeString, "fullOfProblems.js", true);
return formatterFiles.reduce(function(data, filename) {
const fileExt = path.extname(filename),
name = path.basename(filename, fileExt);
if (fileExt === ".js") {
data.formatterResults[name] = {
result: chalk.stripColor(cli.getFormatter(name)(rawMessages.results))
};
}
return data;
}, { formatterResults: {} });
}
//------------------------------------------------------------------------------
// Tasks
//------------------------------------------------------------------------------
target.all = function() {
target.test();
};
target.lint = function() {
let errors = 0,
makeFileCache = " ",
jsCache = " ",
testCache = " ",
lastReturn;
// using the cache locally to speed up linting process
if (!process.env.TRAVIS) {
makeFileCache = " --cache --cache-file .cache/makefile_cache ";
jsCache = " --cache --cache-file .cache/js_cache ";
testCache = " --cache --cache-file .cache/test_cache ";
}
echo("Validating Makefile.js");
lastReturn = exec(ESLINT + makeFileCache + MAKEFILE);
if (lastReturn.code !== 0) {
errors++;
}
echo("Validating JSON Files");
lodash.forEach(JSON_FILES, validateJsonFile);
echo("Validating Markdown Files");
lastReturn = lintMarkdown(MARKDOWN_FILES_ARRAY);
if (lastReturn.code !== 0) {
errors++;
}
echo("Validating JavaScript files");
lastReturn = exec(ESLINT + jsCache + JS_FILES);
if (lastReturn.code !== 0) {
errors++;
}
echo("Validating JavaScript test files");
lastReturn = exec(ESLINT + testCache + TEST_FILES);
if (lastReturn.code !== 0) {
errors++;
}
if (errors) {
exit(1);
}
};
target.test = function() {
target.lint();
target.checkRuleFiles();
let errors = 0,
lastReturn;
// exec(ISTANBUL + " cover " + MOCHA + "-- -c " + TEST_FILES);
lastReturn = nodeCLI.exec("istanbul", "cover", MOCHA, "-- -R progress -t " + MOCHA_TIMEOUT, "-c", TEST_FILES);
if (lastReturn.code !== 0) {
errors++;
}
// exec(ISTANBUL + "check-coverage --statement 99 --branch 98 --function 99 --lines 99");
lastReturn = nodeCLI.exec("istanbul", "check-coverage", "--statement 99 --branch 98 --function 99 --lines 99");
if (lastReturn.code !== 0) {
errors++;
}
target.browserify();
lastReturn = nodeCLI.exec("karma", "start karma.conf.js");
if (lastReturn.code !== 0) {
errors++;
}
if (errors) {
exit(1);
}
target.checkLicenses();
};
target.docs = function() {
echo("Generating documentation");
nodeCLI.exec("jsdoc", "-d jsdoc lib");
echo("Documentation has been output to /jsdoc");
};
target.gensite = function(prereleaseVersion) {
echo("Generating eslint.org");
let docFiles = [
"/rules/",
"/user-guide/",
"/maintainer-guide/",
"/developer-guide/",
"/about/"
];
// append version
if (prereleaseVersion) {
docFiles = docFiles.map(function(docFile) {
return "/" + prereleaseVersion + docFile;
});
}
// 1. create temp and build directory
if (!test("-d", TEMP_DIR)) {
mkdir(TEMP_DIR);
}
// 2. remove old files from the site
docFiles.forEach(function(filePath) {
const fullPath = path.join(DOCS_DIR, filePath),
htmlFullPath = fullPath.replace(".md", ".html");
if (test("-f", fullPath)) {
rm("-r", fullPath);
if (filePath.indexOf(".md") >= 0 && test("-f", htmlFullPath)) {
rm("-r", htmlFullPath);
}
}
});
// 3. Copy docs folder to a temporary directory
cp("-rf", "docs/*", TEMP_DIR);
let versions = test("-f", "./versions.json") ? JSON.parse(cat("./versions.json")) : {};
if (!versions.added) {
versions = {
added: versions,
removed: {}
};
}
// 4. Loop through all files in temporary directory
find(TEMP_DIR).forEach(function(filename) {
if (test("-f", filename) && path.extname(filename) === ".md") {
const rulesUrl = "https://github.com/eslint/eslint/tree/master/lib/rules/",
docsUrl = "https://github.com/eslint/eslint/tree/master/docs/rules/",
baseName = path.basename(filename),
sourceBaseName = path.basename(filename, ".md") + ".js",
sourcePath = path.join("lib/rules", sourceBaseName),
ruleName = path.basename(filename, ".md");
let text = cat(filename),
title;
// 5. Prepend page title and layout variables at the top of rules
if (path.dirname(filename).indexOf("rules") >= 0) {
text = "---\ntitle: Rule " + ruleName + "\nlayout: doc\n---\n<!-- Note: No pull requests accepted for this file. See README.md in the root directory for details. -->\n\n" + text;
} else {
// extract the title from the file itself
title = text.match(/#([^#].+)\n/);
if (title) {
title = title[1].trim();
} else {
title = "Documentation";
}
text = "---\ntitle: " + title + "\nlayout: doc\n---\n<!-- Note: No pull requests accepted for this file. See README.md in the root directory for details. -->\n\n" + text;
}
// 6. Remove .md extension for links and change README to empty string
text = text.replace(/\.md(.*?\))/g, ")").replace("README.html", "");
// 7. Check if there's a trailing white line at the end of the file, if there isn't one, add it
if (!/\n$/.test(text)) {
text = text + "\n";
}
// 8. Append first version of ESLint rule was added at.
if (filename.indexOf("rules/") !== -1) {
if (!versions.added[baseName]) {
versions.added[baseName] = getFirstVersionOfFile(sourcePath);
}
const added = versions.added[baseName];
if (!versions.removed[baseName] && !fs.existsSync(sourcePath)) {
versions.removed[baseName] = getFirstVersionOfDeletion(sourcePath);
}
const removed = versions.removed[baseName];
text += "\n## Version\n\n";
text += removed
? "This rule was introduced in ESLint " + added + " and removed in " + removed + ".\n"
: "This rule was introduced in ESLint " + added + ".\n";
text += "\n## Resources\n\n";
if (!removed) {
text += "* [Rule source](" + rulesUrl + sourceBaseName + ")\n";
}
text += "* [Documentation source](" + docsUrl + baseName + ")\n";
}
// 9. Update content of the file with changes
text.to(filename.replace("README.md", "index.md"));
}
});
JSON.stringify(versions).to("./versions.json");
// 10. Copy temporary directory to site's docs folder
let outputDir = DOCS_DIR;
if (prereleaseVersion) {
outputDir += "/" + prereleaseVersion;
}
cp("-rf", TEMP_DIR + "*", outputDir);
// 11. Generate rule listing page
generateRuleIndexPage(process.cwd());
// 12. Delete temporary directory
rm("-r", TEMP_DIR);
// 13. Update demos, but only for non-prereleases
if (!prereleaseVersion) {
cp("-f", "build/eslint.js", SITE_DIR + "js/app/eslint.js");
cp("-f", "conf/eslint.json", SITE_DIR + "js/app/eslint.json");
}
// 14. Create Example Formatter Output Page
generateFormatterExamples(getFormatterResults(), prereleaseVersion);
};
target.publishsite = function() {
const currentDir = pwd();
cd(SITE_DIR);
exec("git add -A .");
exec("git commit -m \"Autogenerated new docs and demo at " + dateformat(new Date()) + "\"");
exec("git fetch origin && git rebase origin/master");
exec("git push origin master");
cd(currentDir);
};
target.browserify = function() {
// 1. create temp and build directory
if (!test("-d", TEMP_DIR)) {
mkdir(TEMP_DIR);
}
if (!test("-d", BUILD_DIR)) {
mkdir(BUILD_DIR);
}
// 2. copy files into temp directory
cp("-r", "lib/*", TEMP_DIR);
// 3. delete the load-rules.js file
rm(TEMP_DIR + "load-rules.js");
// 4. create new load-rule.js with hardcoded requires
generateRulesIndex(TEMP_DIR);
// 5. browserify the temp directory
nodeCLI.exec("browserify", "-x espree", TEMP_DIR + "eslint.js", "-o", BUILD_DIR + "eslint.js", "-s eslint", "-t [ babelify --presets [ es2015 ] ]");
// 6. Browserify espree
nodeCLI.exec("browserify", "-r espree", "-o", TEMP_DIR + "espree.js");
// 7. Concatenate Babel polyfill, Espree, and ESLint files together
cat("./node_modules/babel-polyfill/dist/polyfill.js", TEMP_DIR + "espree.js", BUILD_DIR + "eslint.js").to(BUILD_DIR + "eslint.js");
// 8. remove temp directory
rm("-r", TEMP_DIR);
};
target.checkRuleFiles = function() {
echo("Validating rules");
const eslintConf = require("./conf/eslint.json").rules;
const ruleFiles = find("lib/rules/").filter(fileType("js"));
let errors = 0;
ruleFiles.forEach(function(filename) {
const basename = path.basename(filename, ".js");
const docFilename = "docs/rules/" + basename + ".md";
/**
* Check if basename is present in eslint conf
* @returns {boolean} true if present
* @private
*/
function isInConfig() {
return eslintConf.hasOwnProperty(basename);
}
/**
* Check if id is present in title
* @param {string} id id to check for
* @returns {boolean} true if present
* @private
*/
function hasIdInTitle(id) {
const docText = cat(docFilename);
const idOldAtEndOfTitleRegExp = new RegExp("^# (.*?) \\(" + id + "\\)"); // original format
const idNewAtBeginningOfTitleRegExp = new RegExp("^# " + id + ": "); // new format is same as rules index
// 1. Added support for new format.
// 2. Will remove support for old format after all docs files have new format.
// 3. Will remove this check when the main heading is automatically generated from rule metadata.
return idNewAtBeginningOfTitleRegExp.test(docText) || idOldAtEndOfTitleRegExp.test(docText);
}
// check for docs
if (!test("-f", docFilename)) {
console.error("Missing documentation for rule %s", basename);
errors++;
} else {
// check for proper doc format
if (!hasIdInTitle(basename)) {
console.error("Missing id in the doc page's title of rule %s", basename);
errors++;
}
}
// check for default configuration
if (!isInConfig()) {
console.error("Missing default setting for %s in eslint.json", basename);
errors++;
}
// check for tests
if (!test("-f", "tests/lib/rules/" + basename + ".js")) {
console.error("Missing tests for rule %s", basename);
errors++;
}
});
if (errors) {
exit(1);
}
};
target.checkLicenses = function() {
/**
* Check if a dependency is eligible to be used by us
* @param {Object} dependency dependency to check
* @returns {boolean} true if we have permission
* @private
*/
function isPermissible(dependency) {
const licenses = dependency.licenses;
if (Array.isArray(licenses)) {
return licenses.some(function(license) {
return isPermissible({
name: dependency.name,
licenses: license
});
});
}
return OPEN_SOURCE_LICENSES.some(function(license) {
return license.test(licenses);
});
}
echo("Validating licenses");
checker.init({
start: __dirname
}, function(deps) {
const impermissible = Object.keys(deps).map(function(dependency) {
return {
name: dependency,
licenses: deps[dependency].licenses
};
}).filter(function(dependency) {
return !isPermissible(dependency);
});
if (impermissible.length) {
impermissible.forEach(function(dependency) {
console.error("%s license for %s is impermissible.",
dependency.licenses,
dependency.name
);
});
exit(1);
}
});
};
target.checkGitCommit = function() {
let commitMsgs,
failed;
if (hasBranch("master")) {
commitMsgs = splitCommandResultToLines(execSilent("git log HEAD --not master --format=format:%s --no-merges"));
} else {
commitMsgs = [execSilent("git log -1 --format=format:%s --no-merges")];
}
echo("Validating Commit Message");
// No commit since master should not cause test to fail
if (commitMsgs[0] === "") {
return;
}
// Check for more than one commit
if (commitMsgs.length > 1) {
echo(" - More than one commit found, please squash.");
failed = true;
}
// Only check non-release messages
if (!semver.valid(commitMsgs[0]) && !/^Revert /.test(commitMsgs[0])) {
if (commitMsgs[0].split(/\r?\n/)[0].length > 72) {
echo(" - First line of commit message must not exceed 72 characters");
failed = true;
}
// Check for tag at start of message
if (!TAG_REGEX.test(commitMsgs[0])) {
echo([" - Commit summary must start with one of:",
" 'Fix:'",
" 'Update:'",
" 'Breaking:'",
" 'Docs:'",
" 'Build:'",
" 'New:'",
" 'Upgrade:'",
" 'Chore:'",
" Please refer to the contribution guidelines for more details."].join("\n"));
failed = true;
}
// Check for an issue reference at end (unless it's a documentation commit)
if (!/^Docs:/.test(commitMsgs[0])) {
if (!ISSUE_REGEX.test(commitMsgs[0])) {
echo([" - Commit summary must end with with one of:",
" '(fixes #1234)'",
" '(refs #1234)'",
" Where '1234' is the issue being addressed.",
" Please refer to the contribution guidelines for more details."].join("\n"));
failed = true;
}
}
}
if (failed) {
exit(1);
}
};
/**
* Downloads a repository which has many js files to test performance with multi files.
* Here, it's eslint@1.10.3 (450 files)
* @param {Function} cb - A callback function.
* @returns {void}
*/
function downloadMultifilesTestTarget(cb) {
if (test("-d", PERF_MULTIFILES_TARGET_DIR)) {
process.nextTick(cb);
} else {
mkdir("-p", PERF_MULTIFILES_TARGET_DIR);
echo("Downloading the repository of multi-files performance test target.");
exec("git clone -b v1.10.3 --depth 1 https://github.com/eslint/eslint.git \"" + PERF_MULTIFILES_TARGET_DIR + "\"", {silent: true}, cb);
}
}
/**
* Creates a config file to use performance tests.
* This config is turning all core rules on.
* @returns {void}
*/
function createConfigForPerformanceTest() {
const content = [
"root: true",
"env:",
" node: true",
" es6: true",
"rules:"
];
content.push.apply(
content,
ls("lib/rules").map(function(fileName) {
return " " + path.basename(fileName, ".js") + ": 1";
})
);
content.join("\n").to(PERF_ESLINTRC);
}
/**
* Calculates the time for each run for performance
* @param {string} cmd cmd
* @param {int} runs Total number of runs to do
* @param {int} runNumber Current run number
* @param {int[]} results Collection results from each run
* @param {Function} cb Function to call when everything is done
* @returns {int[]} calls the cb with all the results
* @private
*/
function time(cmd, runs, runNumber, results, cb) {
const start = process.hrtime();
exec(cmd, { silent: true }, function(code, stdout, stderr) {
const diff = process.hrtime(start),
actual = (diff[0] * 1e3 + diff[1] / 1e6); // ms
if (code) {
echo(" Performance Run #" + runNumber + " failed.");
if (stdout) {
echo("STDOUT:\n" + stdout + "\n\n");
}
if (stderr) {
echo("STDERR:\n" + stderr + "\n\n");
}
return cb(null);
}
results.push(actual);
echo(" Performance Run #" + runNumber + ": %dms", actual);