50 lines
1.4 KiB
JavaScript
50 lines
1.4 KiB
JavaScript
'use strict';
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module.exports = makeError;
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function makeError(code, message, options) {
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var line = options.line;
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var column = options.column;
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var filename = options.filename;
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var src = options.src;
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var fullMessage;
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var location = line + (column ? ':' + column : '');
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if (src && line >= 1 && line <= src.split('\n').length) {
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var lines = src.split('\n');
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var start = Math.max(line - 3, 0);
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var end = Math.min(lines.length, line + 3);
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// Error context
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var context = lines.slice(start, end).map(function(text, i){
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var curr = i + start + 1;
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var preamble = (curr == line ? ' > ' : ' ')
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+ curr
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+ '| ';
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var out = preamble + text;
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if (curr === line && column > 0) {
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out += '\n';
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out += Array(preamble.length + column).join('-') + '^';
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}
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return out;
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}).join('\n');
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fullMessage = (filename || 'Pug') + ':' + location + '\n' + context + '\n\n' + message;
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} else {
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fullMessage = (filename || 'Pug') + ':' + location + '\n\n' + message;
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}
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var err = new Error(fullMessage);
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err.code = 'PUG:' + code;
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err.msg = message;
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err.line = line;
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err.column = column;
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err.filename = filename;
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err.src = src;
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err.toJSON = function () {
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return {
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code: this.code,
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msg: this.msg,
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line: this.line,
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column: this.column,
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filename: this.filename
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};
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};
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return err;
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}
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