{"id":109009,"date":"2026-09-23T06:25:21","date_gmt":"2026-09-22T22:25:21","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/109009.html"},"modified":"2026-09-23T06:25:21","modified_gmt":"2026-09-22T22:25:21","slug":"%e5%89%8d%e7%ab%afsourcemap%e5%8e%9f%e7%90%86%e6%b7%b1%e5%ba%a6%e8%a7%a3%e6%9e%90%ef%bc%9avlq%e7%bc%96%e7%a0%81%e4%b8%8e%e5%8f%8d%e8%a7%a3%e7%ae%97%e6%b3%95%e6%89%8b%e5%86%99","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/109009.html","title":{"rendered":"\u524d\u7aefSourceMap\u539f\u7406\u6df1\u5ea6\u89e3\u6790\uff1aVLQ\u7f16\u7801\u4e0e\u53cd\u89e3\u7b97\u6cd5\u624b\u5199"},"content":{"rendered":"<h2>\u524d\u7aefSourceMap\u539f\u7406\u6df1\u5ea6\u89e3\u6790&#xff1a;VLQ\u7f16\u7801\u4e0e\u53cd\u89e3\u7b97\u6cd5\u624b\u5199<\/h2>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260922222520-6ab300501d7df.webp\" alt=\"\u5c01\u9762\u4fe1\u606f\u56fe\" \/><\/p>\n<p>\u5728\u524d\u7aef\u751f\u4ea7\u73af\u5883\u4e2d&#xff0c;\u4e3a\u4e86\u4fdd\u62a4\u6e90\u7801\u5b89\u5168\u5e76\u51cf\u5c0f\u7f51\u7edc\u4f20\u8f93\u4f53\u79ef&#xff0c;\u4ee3\u7801\u901a\u5e38\u4f1a\u88ab\u7ecf\u8fc7 Terser \/ esbuild \u7684\u6df1\u5ea6\u538b\u7f29\u3001\u6df7\u6dc6\u4e0e\u964d\u7ea7\u8f6c\u8bd1&#xff1a;<\/p>\n<ul>\n<li>\u539f\u672c\u4eba\u7c7b\u53ef\u8bfb\u7684 function calculateWeeklyReport(options) { &#8230; }&#xff1b;<\/li>\n<li>\u88ab\u538b\u7f29\u6df7\u6dc6\u6210\u4e86\u53ea\u6709\u4e00\u884c\u7684 function a(e){return &#8230;}&#xff1b;<\/li>\n<li>\u4e00\u65e6\u751f\u4ea7\u73af\u5883\u7ebf\u4e0a\u62a5\u9519&#xff0c;\u6d4f\u89c8\u5668\u63a7\u5236\u53f0\u6253\u5370\u51fa\u7684\u9519\u8bef\u5806\u6808\u957f\u8fd9\u6837&#xff1a;TypeError: Cannot read properties of undefined at a.js:1:3482\u3002<\/li>\n<\/ul>\n<p>\u9762\u5bf9\u8fd9\u884c\u5929\u4e66\u822c\u7684\u62a5\u9519&#xff0c;Sentry \u6216 Chrome DevTools \u662f\u5982\u4f55\u795e\u5947\u5730**\u5c06\u5176 1:1 \u9006\u5411\u8fd8\u539f\u4e3a\u539f\u59cb TypeScript \u6e90\u7801\u884c\u6570&#xff08;src\/services\/report.ts:42:15&#xff09;**\u7684&#xff1f;<\/p>\n<p>\u8fd9\u4e00\u5207\u7684\u5e95\u5c42\u6838\u5fc3\u79d8\u5bc6&#xff0c;\u5c31\u662f\u6784\u5efa\u5de5\u5177\u751f\u6210\u7684 *.map \u6587\u4ef6&#xff08;Source Map V3 \u89c4\u8303&#xff09;\u4e0e Variable Length Quantity&#xff08;VLQ \u53d8\u957f\u6570\u91cf\u7f16\u7801\u7b97\u6cd5&#xff09;\u3002<\/p>\n<p>\u672c\u6587\u6df1\u5165\u5256\u6790 Source Map V3 \u7684\u5e95\u5c42\u6570\u636e\u7ed3\u6784&#xff0c;\u5e76\u624b\u5199\u5b9e\u73b0\u4e00\u4e2a\u7eaf TypeScript \u7684 Base64-VLQ \u7f16\u89e3\u7801\u5668\u3002<\/p>\n<h3>Source Map V3 \u5185\u90e8 JSON \u6570\u636e\u7ed3\u6784\u89e3\u5256<\/h3>\n<p>\u6253\u5f00\u4e00\u4e2a\u7531 Vite \u751f\u6210\u7684 .map \u6587\u4ef6&#xff0c;\u5b83\u7684\u6838\u5fc3\u5b57\u6bb5\u5982\u4e0b&#xff1a;<\/p>\n<p>{<br \/>\n  &#034;version&#034;: 3,<br \/>\n  &#034;file&#034;: &#034;index.min.js&#034;,<br \/>\n  &#034;sources&#034;: [&#034;src\/index.ts&#034;, &#034;src\/utils.ts&#034;],<br \/>\n  &#034;sourcesContent&#034;: [&#034;const x: number &#061; 10; &#8230;&#034;],<br \/>\n  &#034;names&#034;: [&#034;calculateReport&#034;, &#034;userId&#034;, &#034;wordCount&#034;],<br \/>\n  &#034;mappings&#034;: &#034;AAAA,SAASA,kBAAiB;EACxB,OAAOC;AACT&#034;<br \/>\n}<\/p>\n<p>\u5176\u4e2d\u6700\u795e\u79d8\u3001\u4fe1\u606f\u5bc6\u5ea6\u6700\u9ad8\u7684\u6838\u5fc3\u5b57\u6bb5\u5c31\u662f mappings&#xff1a;<\/p>\n<ul>\n<li>\u5b83\u7528\u5206\u53f7 ; \u5206\u9694\u538b\u7f29\u4ea7\u7269\u7684\u6bcf\u4e00\u884c&#xff1b;<\/li>\n<li>\u7528\u9017\u53f7 , \u5206\u9694\u6bcf\u884c\u4e2d\u7684\u6bcf\u4e00\u4e2a Token&#xff08;\u4ee3\u7801\u6bb5&#xff09;&#xff1b;<\/li>\n<li>\u6bcf\u4e2a Token \u7531 1\u30014 \u6216 5 \u4e2a\u5b57\u7b26\u7ec4\u6210&#xff0c;\u4f8b\u5982 AAAA \u6216 kBAAiB\u2014\u2014\u8fd9\u6b63\u662f\u7ecf\u8fc7 Base64-VLQ \u538b\u7f29\u7f16\u7801\u7684\u4e94\u7ef4\u6620\u5c04\u5750\u6807&#xff01;<\/li>\n<\/ul>\n<h3>\u4e94\u7ef4\u6620\u5c04\u5750\u6807\u5143\u7ec4&#xff08;Segment Tuple&#xff09;<\/h3>\n<p>\u6bcf\u4e00\u4e2a VLQ \u7247\u6bb5\u89e3\u7801\u540e&#xff0c;\u4ee3\u8868 5 \u4e2a\u6570\u5b57 [col, sourceIdx, origLine, origCol, nameIdx]&#xff1a;<\/p>\n<p> 1. col:       \u538b\u7f29\u540e\u4ea7\u7269\u4e2d\u7684\u5217\u53f7 (0-indexed)<br \/>\n 2. sourceIdx: \u5bf9\u5e94 sources \u6570\u7ec4\u4e2d\u7684\u7b2c\u51e0\u4e2a\u6e90\u6587\u4ef6\u7d22\u5f15<br \/>\n 3. origLine:  \u5bf9\u5e94\u539f\u59cb\u6e90\u7801\u4e2d\u7684\u884c\u53f7 (0-indexed)<br \/>\n 4. origCol:   \u5bf9\u5e94\u539f\u59cb\u6e90\u7801\u4e2d\u7684\u5217\u53f7 (0-indexed)<br \/>\n 5. nameIdx:   (\u53ef\u9009) \u5bf9\u5e94 names \u53d8\u91cf\u540d\u6570\u7ec4\u4e2d\u7684\u7d22\u5f15<\/p>\n<p>\u6781\u5176\u7cbe\u5999\u7684\u76f8\u5bf9\u589e\u91cf\u5b58\u50a8&#xff08;Relative Delta Encoding&#xff09;&#xff1a;\u4e3a\u4e86\u6781\u81f4\u538b\u7f29\u4f53\u79ef&#xff0c;\u6bcf\u4e00\u4e2a\u6570\u5b57\u5b58\u50a8\u7684\u90fd\u4e0d\u662f\u7edd\u5bf9\u503c&#xff0c;\u800c\u662f\u76f8\u5bf9\u4e8e\u4e0a\u4e00\u4e2a\u6570\u5b57\u7684\u76f8\u5bf9\u504f\u79fb\u91cf&#xff08;Delta&#xff09;&#xff01;<\/p>\n<h3>\u624b\u5199\u5b9e\u73b0&#xff1a;Base64-VLQ \u53d8\u957f\u6570\u5b57\u89e3\u7801\u7b97\u6cd5<\/h3>\n<p>VLQ \u7684\u6838\u5fc3\u539f\u7406\u662f\u5229\u7528\u6bcf\u4e2a Base64 \u5b57\u7b26\u7684 6 \u4e2a\u6bd4\u7279\u4f4d&#xff1a;<\/p>\n<ul>\n<li>\u6700\u9ad8\u4f4d&#xff08;Bit 5&#xff09;\u4e3a\u8fde\u7eed\u6807\u5fd7\u4f4d&#xff08;Continuation Bit&#xff09;&#xff1a;1 \u8868\u793a\u5f53\u524d\u6570\u5b57\u8fd8\u6ca1\u7ed3\u675f&#xff0c;\u4e0b\u4e00\u4e2a\u5b57\u7b26\u7ee7\u7eed\u62fc\u63a5&#xff1b;0 \u8868\u793a\u5f53\u524d\u6570\u5b57\u7ed3\u675f&#xff1b;<\/li>\n<li>\u6700\u4f4e\u4f4d&#xff08;Bit 0&#xff09;\u5728\u7b2c\u4e00\u4e2a\u5b57\u8282\u4e2d\u4ee3\u8868\u6b63\u8d1f\u7b26\u53f7\u4f4d&#xff08;Sign Bit&#xff09;&#xff1a;1 \u4e3a\u8d1f\u6570&#xff0c;0 \u4e3a\u6b63\u6570&#xff1b;<\/li>\n<li>\u4e2d\u95f4 4 \u4f4d\u4ee3\u8868\u771f\u5b9e\u7684\u6570\u503c\u6570\u636e\u3002<\/li>\n<\/ul>\n<p>\/\/ mini-sourcemap\/vlqDecoder.ts<\/p>\n<p>const BASE64_CHARS &#061; &#039;ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789&#043;\/&#039;;<br \/>\nconst CHAR_TO_INT &#061; new Map&lt;string, number&gt;();<br \/>\nfor (let i &#061; 0; i &lt; BASE64_CHARS.length; i&#043;&#043;) {<br \/>\n  CHAR_TO_INT.set(BASE64_CHARS[i], i);<br \/>\n}<\/p>\n<p>\/\/ \u89e3\u7801\u4e00\u4e2a Base64-VLQ \u5b57\u7b26\u4e32\u4e3a\u76f8\u5bf9\u589e\u91cf\u6574\u6570\u6570\u7ec4<br \/>\nexport function decodeVLQ(str: string): number[] {<br \/>\n  const result: number[] &#061; [];<br \/>\n  let shift &#061; 0;<br \/>\n  let value &#061; 0;<\/p>\n<p>  for (let i &#061; 0; i &lt; str.length; i&#043;&#043;) {<br \/>\n    const char &#061; str[i];<br \/>\n    const integer &#061; CHAR_TO_INT.get(char);<br \/>\n    if (integer &#061;&#061;&#061; undefined) throw new Error(&#096;\u975e\u6cd5\u7684 Base64 \u5b57\u7b26: ${char}&#096;);<\/p>\n<p>    const hasContinuation &#061; (integer &amp; 32) !&#061;&#061; 0; \/\/ Bit 5: \u8fde\u7eed\u4f4d<br \/>\n    const digit &#061; integer &amp; 31; \/\/ \u63d0\u53d6\u540e 5 \u4f4d\u6570\u636e\u4f4d<\/p>\n<p>    value &#043;&#061; digit &lt;&lt; shift;<\/p>\n<p>    if (hasContinuation) {<br \/>\n      shift &#043;&#061; 5;<br \/>\n    } else {<br \/>\n      \/\/ \u5f53\u524d\u6570\u5b57\u7ed3\u675f&#xff0c;\u89e3\u6790\u6b63\u8d1f\u7b26\u53f7\u4f4d (Bit 0)<br \/>\n      const isNegative &#061; (value &amp; 1) &#061;&#061;&#061; 1;<br \/>\n      const finalValue &#061; value &gt;&gt; 1;<br \/>\n      result.push(isNegative ? -finalValue : finalValue);<\/p>\n<p>      \/\/ \u91cd\u7f6e\u7d2f\u52a0\u5668&#xff0c;\u51c6\u5907\u89e3\u7801\u4e0b\u4e00\u4e2a\u6570\u5b57<br \/>\n      value &#061; 0;<br \/>\n      shift &#061; 0;<br \/>\n    }<br \/>\n  }<\/p>\n<p>  return result;<br \/>\n}<\/p>\n<h3>\u6d4b\u8bd5\u9a8c\u8bc1&#xff1a;\u89c1\u8bc1 VLQ \u5b57\u7b26\u8fd8\u539f\u4e3a\u771f\u5b9e\u5750\u6807<\/h3>\n<p>\/\/ test\/vlqDemo.ts<br \/>\nimport { decodeVLQ } from &#039;.\/vlqDecoder&#039;;<\/p>\n<p>\/\/ \u89e3\u7801\u4e00\u6bb5\u7ecf\u5178\u7684 VLQ \u7247\u6bb5 &#034;AAAA&#034;<br \/>\nconsole.log(decodeVLQ(&#039;AAAA&#039;));<br \/>\n\/\/ \u8f93\u51fa: [0, 0, 0, 0] (\u5bf9\u5e94\u7b2c 0 \u5217\u3001\u7b2c 0 \u4e2a\u6587\u4ef6\u3001\u7b2c 0 \u884c\u3001\u7b2c 0 \u5217)<\/p>\n<p>\/\/ \u89e3\u7801\u4e00\u4e2a\u5e26\u6709\u589e\u91cf\u7684\u7247\u6bb5 &#034;kBAAiB&#034;<br \/>\nconsole.log(decodeVLQ(&#039;kBAAiB&#039;));<br \/>\n\/\/ \u8f93\u51fa: [18, 0, 0, 4, 1] (\u76f8\u5bf9\u504f\u79fb: \u5217&#043;18, \u6587\u4ef60, \u884c0, \u6e90\u7801\u5217&#043;4, \u53d8\u91cf\u540d1)<\/p>\n<h3>\u751f\u4ea7\u7ea7 SourceMap \u5b89\u5168\u6cbb\u7406\u94c1\u5f8b<\/h3>\n<li>\u7edd\u5bf9\u7981\u6b62\u5c06 .map \u6587\u4ef6\u516c\u5f00\u53d1\u5e03\u5230\u751f\u4ea7 CDN \u670d\u52a1\u5668&#xff1a;\u5982\u679c\u5728 Nginx \u4e2d\u5141\u8bb8\u6240\u6709\u4eba\u4e0b\u8f7d main.js.map&#xff0c;\u76f8\u5f53\u4e8e\u628a\u5168\u7ad9 100% \u7684\u672a\u7ecf\u7f16\u8bd1\u7684\u539f\u59cb TypeScript \u6e90\u7801&#xff08;\u5305\u62ec\u63a5\u53e3\u8def\u5f84\u3001\u52a0\u89e3\u5bc6\u903b\u8f91\u3001\u6ce8\u91ca&#xff09;\u514d\u8d39\u9001\u7ed9\u4e86\u7ade\u4e89\u5bf9\u624b\u548c\u9ed1\u5ba2&#xff1b;<\/li>\n<li>\u6b63\u786e\u59ff\u52bf&#xff1a;CI \u6784\u5efa\u671f\u4e0a\u4f20\u79c1\u6709 Sentry \u540e\u7acb\u5373\u5220\u9664&#xff1a;\u5728 GitHub Actions \u6784\u5efa\u5b8c\u6210\u540e&#xff0c;\u4f7f\u7528 Sentry CLI \u5c06 .map \u6587\u4ef6\u76f4\u63a5\u4e0a\u4f20\u81f3 Sentry \u79c1\u6709\u540e\u53f0&#xff0c;\u968f\u540e\u6267\u884c rm dist\/**\/*.map&#xff0c;\u786e\u4fdd\u516c\u7f51 CDN \u4e0a\u53ea\u6709\u7eaf\u51c0\u6df7\u6dc6\u4ee3\u7801&#xff0c;\u517c\u987e**\u201c\u6e90\u7801\u7edd\u5bf9\u5b89\u5168\u201d\u4e0e\u201c\u7ebf\u4e0a\u62a5\u9519 100% \u7cbe\u51c6\u53cd\u89e3\u201d**\u3002<\/li>\n","protected":false},"excerpt":{"rendered":"<p>\u524d\u7aefSourceMap\u539f\u7406\u6df1\u5ea6\u89e3\u6790&#xff1a;VLQ\u7f16\u7801\u4e0e\u53cd\u89e3\u7b97\u6cd5\u624b\u5199\u5728\u524d\u7aef\u751f\u4ea7\u73af\u5883\u4e2d&#xff0c;\u4e3a\u4e86\u4fdd\u62a4\u6e90\u7801\u5b89\u5168\u5e76\u51cf\u5c0f\u7f51\u7edc\u4f20\u8f93\u4f53\u79ef&#xff0c;\u4ee3\u7801\u901a\u5e38\u4f1a\u88ab\u7ecf\u8fc7 Terser \/ esbuild \u7684\u6df1\u5ea6\u538b\u7f29\u3001\u6df7\u6dc6\u4e0e\u964d\u7ea7\u8f6c\u8bd1&#xff1a;<br \/>\n\u539f\u672c\u4eba\u7c7b\u53ef\u8bfb\u7684 function calculateWeeklyReport(options) { &#8230; }&#xff1b;\u88ab\u538b\u7f29\u6df7\u6dc6\u6210\u4e86\u53ea\u6709\u4e00\u884c\u7684 function a(e){return &#8230;}&#xff1b;\u4e00\u65e6\u751f\u4ea7\u73af<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[66,723,955,50,87],"topic":[],"class_list":["post-109009","post","type-post","status-publish","format-standard","hentry","category-server","tag-ai","tag-react","tag-955","tag-50","tag-87"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u524d\u7aefSourceMap\u539f\u7406\u6df1\u5ea6\u89e3\u6790\uff1aVLQ\u7f16\u7801\u4e0e\u53cd\u89e3\u7b97\u6cd5\u624b\u5199 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/109009.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u524d\u7aefSourceMap\u539f\u7406\u6df1\u5ea6\u89e3\u6790\uff1aVLQ\u7f16\u7801\u4e0e\u53cd\u89e3\u7b97\u6cd5\u624b\u5199 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"\u524d\u7aefSourceMap\u539f\u7406\u6df1\u5ea6\u89e3\u6790&#xff1a;VLQ\u7f16\u7801\u4e0e\u53cd\u89e3\u7b97\u6cd5\u624b\u5199\u5728\u524d\u7aef\u751f\u4ea7\u73af\u5883\u4e2d&#xff0c;\u4e3a\u4e86\u4fdd\u62a4\u6e90\u7801\u5b89\u5168\u5e76\u51cf\u5c0f\u7f51\u7edc\u4f20\u8f93\u4f53\u79ef&#xff0c;\u4ee3\u7801\u901a\u5e38\u4f1a\u88ab\u7ecf\u8fc7 Terser \/ esbuild \u7684\u6df1\u5ea6\u538b\u7f29\u3001\u6df7\u6dc6\u4e0e\u964d\u7ea7\u8f6c\u8bd1&#xff1a; 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