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112 lines
2.7 KiB
112 lines
2.7 KiB
2 years ago
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/**
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* Copyright (c) 2015-present, Facebook, Inc.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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'use strict';
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const path = require('path');
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const chalk = require('chalk');
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const stripAnsi = require('strip-ansi');
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const table = require('text-table');
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const cwd = process.cwd();
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const emitErrorsAsWarnings =
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process.env.NODE_ENV === 'development' &&
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process.env.ESLINT_NO_DEV_ERRORS === 'true';
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function isError(message) {
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if (message.fatal || message.severity === 2) {
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return true;
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}
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return false;
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}
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function getRelativePath(filePath) {
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return path.relative(cwd, filePath);
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}
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function formatter(results) {
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let output = '\n';
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let hasErrors = false;
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let reportContainsErrorRuleIDs = false;
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results.forEach(result => {
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let messages = result.messages;
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if (messages.length === 0) {
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return;
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}
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messages = messages.map(message => {
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let messageType;
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if (isError(message) && !emitErrorsAsWarnings) {
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messageType = 'error';
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hasErrors = true;
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if (message.ruleId) {
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reportContainsErrorRuleIDs = true;
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}
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} else {
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messageType = 'warn';
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}
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let line = message.line || 0;
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if (message.column) {
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line += ':' + message.column;
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}
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let position = chalk.bold('Line ' + line + ':');
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return [
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'',
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position,
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messageType,
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message.message.replace(/\.$/, ''),
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chalk.underline(message.ruleId || ''),
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];
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});
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// if there are error messages, we want to show only errors
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if (hasErrors) {
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messages = messages.filter(m => m[2] === 'error');
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}
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// add color to rule keywords
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messages.forEach(m => {
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m[4] = m[2] === 'error' ? chalk.red(m[4]) : chalk.yellow(m[4]);
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m.splice(2, 1);
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});
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let outputTable = table(messages, {
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align: ['l', 'l', 'l'],
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stringLength(str) {
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return stripAnsi(str).length;
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},
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});
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// print the filename and relative path
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output += `${getRelativePath(result.filePath)}\n`;
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// print the errors
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output += `${outputTable}\n\n`;
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});
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if (reportContainsErrorRuleIDs) {
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// Unlike with warnings, we have to do it here.
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// We have similar code in react-scripts for warnings,
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// but warnings can appear in multiple files so we only
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// print it once at the end. For errors, however, we print
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// it here because we always show at most one error, and
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// we can only be sure it's an ESLint error before exiting
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// this function.
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output +=
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'Search for the ' +
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chalk.underline(chalk.red('keywords')) +
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' to learn more about each error.';
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}
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return output;
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}
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module.exports = formatter;
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