86 lines
3.0 KiB
JavaScript
86 lines
3.0 KiB
JavaScript
class ErrorHandler {
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constructor(options) {
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if (!options) throw new Error("Options not provided");
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if (!options.url) throw new Error("URL is required");
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if (!options.apikey) throw new Error("API key is required");
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this.url = options.url;
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this.apikey = options.apikey;
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this.catchError();
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}
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getSourceCode(lineNumber) {
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return this.getInlineSourceCode(lineNumber) || this.getFullSourceWithHighlight(lineNumber);
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}
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getInlineSourceCode(lineNumber) {
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const scripts = document.querySelectorAll('script');
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for (let script of scripts) {
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if (!script.src) {
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const scriptLines = script.textContent.split("\n");
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const scriptPosition = this.getErrorPosition(script);
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if (lineNumber >= scriptPosition.startLine && lineNumber <= scriptPosition.endLine) {
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return this.highlightSource(scriptLines, lineNumber - scriptPosition.startLine);
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}
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}
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}
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return null;
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}
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getFullSourceWithHighlight(lineNumber) {
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const lines = document.documentElement.outerHTML.split("\n");
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return this.highlightSource(lines, lineNumber - 1);
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}
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highlightSource(lines, lineNumber) {
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const start = Math.max(lineNumber - 2, 0);
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const end = Math.min(lineNumber + 2, lines.length - 1);
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lines[lineNumber] = '>> ' + lines[lineNumber] + ' <<';
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return lines.slice(start, end + 1).join("\n");
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}
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getErrorPosition(script) {
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let totalLines = 0;
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let element = script.previousElementSibling;
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while (element) {
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totalLines += (element.outerHTML || element.textContent).split("\n").length;
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element = element.previousElementSibling;
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}
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return {
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startLine: totalLines + 1,
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endLine: totalLines + script.textContent.split("\n").length
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};
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}
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catchError() {
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window.onerror = (message, url, lineNumber, column, error) => {
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this.reportError(message, url, lineNumber, column, error.stack, 'JavaScript Error');
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return false;
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};
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window.addEventListener('unhandledrejection', event => {
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this.reportError(event.reason.toString(), document.location.href, 0, 0, event.reason.stack, 'Promise Rejection');
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});
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}
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reportError(message, url, lineNumber, column, stack, type = 'JavaScript Error') {
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fetch(this.url ? `${location.protocol}//${this.url}/${this.apikey}` : window.location.href, {
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method: "post",
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headers: {
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'Accept': "application/json",
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'Content-Type': "application/json"
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},
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body: JSON.stringify({
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type,
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message,
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url,
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lineNumber,
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column,
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stack,
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location: window.location.href,
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source: this.getSourceCode(lineNumber)
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})
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}).then(response => response.json()).then(console.info);
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}
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}
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