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Configuration error
Configuration error
File size: 2,269 Bytes
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'use strict';
const createCustomError = require('../utils/create-custom-error.cjs');
const MAX_LINE_LENGTH = 100;
const OFFSET_CORRECTION = 60;
const TAB_REPLACEMENT = ' ';
function sourceFragment({ source, line, column }, extraLines) {
function processLines(start, end) {
return lines
.slice(start, end)
.map((line, idx) =>
String(start + idx + 1).padStart(maxNumLength) + ' |' + line
).join('\n');
}
const lines = source.split(/\r\n?|\n|\f/);
const startLine = Math.max(1, line - extraLines) - 1;
const endLine = Math.min(line + extraLines, lines.length + 1);
const maxNumLength = Math.max(4, String(endLine).length) + 1;
let cutLeft = 0;
// column correction according to replaced tab before column
column += (TAB_REPLACEMENT.length - 1) * (lines[line - 1].substr(0, column - 1).match(/\t/g) || []).length;
if (column > MAX_LINE_LENGTH) {
cutLeft = column - OFFSET_CORRECTION + 3;
column = OFFSET_CORRECTION - 2;
}
for (let i = startLine; i <= endLine; i++) {
if (i >= 0 && i < lines.length) {
lines[i] = lines[i].replace(/\t/g, TAB_REPLACEMENT);
lines[i] =
(cutLeft > 0 && lines[i].length > cutLeft ? '\u2026' : '') +
lines[i].substr(cutLeft, MAX_LINE_LENGTH - 2) +
(lines[i].length > cutLeft + MAX_LINE_LENGTH - 1 ? '\u2026' : '');
}
}
return [
processLines(startLine, line),
new Array(column + maxNumLength + 2).join('-') + '^',
processLines(line, endLine)
].filter(Boolean).join('\n');
}
function SyntaxError(message, source, offset, line, column) {
const error = Object.assign(createCustomError.createCustomError('SyntaxError', message), {
source,
offset,
line,
column,
sourceFragment(extraLines) {
return sourceFragment({ source, line, column }, isNaN(extraLines) ? 0 : extraLines);
},
get formattedMessage() {
return (
`Parse error: ${message}\n` +
sourceFragment({ source, line, column }, 2)
);
}
});
return error;
}
exports.SyntaxError = SyntaxError;
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