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59 lines
1.7 KiB
59 lines
1.7 KiB
/**
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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 os = require('os');
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const codeFrame = require('@babel/code-frame').codeFrameColumns;
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const chalk = require('chalk');
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const fs = require('fs');
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const types = { diagnostic: 'TypeScript', lint: 'TSLint' };
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function formatter(message, useColors) {
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const { type, severity, file, line, content, code, character } =
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typeof message.getFile === 'function'
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? {
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type: message.getType(),
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severity: message.getSeverity(),
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file: message.getFile(),
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line: message.getLine(),
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content: message.getContent(),
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code: message.getCode(),
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character: message.getCharacter(),
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}
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: message;
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const colors = new chalk.constructor({ enabled: useColors });
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const messageColor = message.isWarningSeverity() ? colors.yellow : colors.red;
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const fileAndNumberColor = colors.bold.cyan;
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const source = file && fs.existsSync(file) && fs.readFileSync(file, 'utf-8');
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const frame = source
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? codeFrame(
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source,
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{ start: { line: line, column: character } },
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{ highlightCode: useColors }
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)
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.split('\n')
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.map(str => ' ' + str)
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.join(os.EOL)
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: '';
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return [
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messageColor.bold(`${types[type]} ${severity.toLowerCase()} in `) +
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fileAndNumberColor(`${file}(${line},${character})`) +
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messageColor(':'),
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content +
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' ' +
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messageColor.underline((type === 'lint' ? 'Rule: ' : 'TS') + code),
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'',
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frame,
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].join(os.EOL);
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}
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module.exports = formatter;
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