74 lines
2.3 KiB
TypeScript
74 lines
2.3 KiB
TypeScript
import * as path from 'path';
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export interface Frame {
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functionName?: string;
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fileName: string;
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line?: number;
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column?: number;
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}
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/** Converts an error into a list of frames based on the error stack */
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export function parse(err: Error): Frame[] {
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if (!err.stack) {
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return [];
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}
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const lines = err.stack.split('\n').slice(1);
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return lines
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.map(function(line: string): Frame {
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if (line.match(/^\s*[-]{4,}$/)) {
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return { fileName: line };
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}
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let pieces = line.trim().split(' ');
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// pieces[0] will always be 'at'
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function parseData(fileUri: string, functionName?: string): Frame {
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let pieces = fileUri.split(':');
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let column: number | undefined = parseInt(pieces[pieces.length - 1]); if (Number.isNaN(column)) column = undefined;
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let line: number | undefined = parseInt(pieces[pieces.length - 2]); if (Number.isNaN(line)) line = undefined;
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let colLinePieces = (column ? 1 : 0) + (line ? 1 : 0)
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let fileName = pieces.slice(0, pieces.length - colLinePieces).join(':');
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return { fileName: fileName, line: line, column: column, functionName: functionName };
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}
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if (pieces.length === 2) {
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return parseData(pieces[1]);
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} else {
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// chop of parenthesis chop off 'at' and file path
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return parseData(pieces[pieces.length - 1].slice(1, -1), pieces.slice(1, -1).join(' '));
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}
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});
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}
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export function relativizeFilePath(frame: Frame, baseDir: string): Frame {
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if (frame.fileName && frame.fileName[0] === '/') {
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let relativeFileName = path.relative(baseDir, frame.fileName);
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return Object.assign({}, frame, { fileName: relativeFileName });
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}
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return frame;
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}
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/** Converts a parsed frame into a line that "could have come from an Error" */
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export function getFrameLine(frame: Frame): string {
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if (frame.functionName) {
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if (frame.line) {
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if (frame.column) {
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return ` at ${frame.functionName} (${frame.fileName}:${frame.line}:${frame.column})`;
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} else {
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return ` at ${frame.functionName} (${frame.fileName}:${frame.line})`;
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}
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} else {
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return ` at ${frame.functionName} (${frame.fileName})`;
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}
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} else {
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if (frame.line) {
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if (frame.column) {
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return ` at ${frame.fileName}:${frame.line}:${frame.column}`;
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} else {
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return ` at ${frame.fileName}:${frame.line}`;
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}
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} else {
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return ` at ${frame.fileName}`;
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}
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}
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}
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