chore: fix the invalid svg images.

options.ts

@@ -178,9 +178,12 @@ const options: z.input<typeof Options> = {
     },
   },
   thumbnail: ({ src, width, height }) => {
+    if (src.endsWith('.svg')) {
+      return src;
+    }
     if (isProd()) {
       // Add upyun thumbnail support.
-      return `${src}!upyun520/both/${width}x${height}/quality/100/unsharp/true/progressive/true`;
+      return `${src}!upyun520/both/${width}x${height}/format/webp/quality/100/unsharp/true/progressive/true`;
     }
     // See https://docs.astro.build/en/reference/image-service-reference/#local-services
     // Remember to add the localhost to you image service settings.

package-lock.json

@@ -42,8 +42,8 @@
         "resize-sensor": "^0.0.6",
         "rimraf": "^5.0.7",
         "sharp": "^0.33.4",
-        "typescript": "^5.4.5",
+        "typescript": "^5.5.2",
-        "unist-util-visit": "^5.0.0"
+        "unist-util-select": "^5.1.0"
       }
     },
     "node_modules/@ampproject/remapping": {
@@ -3290,6 +3290,13 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
+    "node_modules/boolbase": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/boolbase/-/boolbase-1.0.0.tgz",
+      "integrity": "sha512-JZOSA7Mo9sNGB8+UjSgzdLtokWAky1zbztM3WRLCbZ70/3cTANmQmOdR7y2g+J0e2WXywy1yS468tY+IruqEww==",
+      "dev": true,
+      "license": "ISC"
+    },
     "node_modules/bootstrap": {
       "version": "5.3.3",
       "resolved": "https://registry.npmjs.org/bootstrap/-/bootstrap-5.3.3.tgz",
@@ -3833,6 +3840,23 @@
         "node": ">= 8"
       }
     },
+    "node_modules/css-selector-parser": {
+      "version": "3.0.5",
+      "resolved": "https://registry.npmjs.org/css-selector-parser/-/css-selector-parser-3.0.5.tgz",
+      "integrity": "sha512-3itoDFbKUNx1eKmVpYMFyqKX04Ww9osZ+dLgrk6GEv6KMVeXUhUnp4I5X+evw+u3ZxVU6RFXSSRxlTeMh8bA+g==",
+      "dev": true,
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/mdevils"
+        },
+        {
+          "type": "patreon",
+          "url": "https://patreon.com/mdevils"
+        }
+      ],
+      "license": "MIT"
+    },
     "node_modules/cssesc": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/cssesc/-/cssesc-3.0.0.tgz",
@@ -6701,6 +6725,19 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
+    "node_modules/nth-check": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/nth-check/-/nth-check-2.1.1.tgz",
+      "integrity": "sha512-lqjrjmaOoAnWfMmBPL+XNnynZh2+swxiX3WUE0s4yEHI6m+AwrK2UZOimIRl3X/4QctVqS8AiZjFqyOGrMXb/w==",
+      "dev": true,
+      "license": "BSD-2-Clause",
+      "dependencies": {
+        "boolbase": "^1.0.0"
+      },
+      "funding": {
+        "url": "https://github.com/fb55/nth-check?sponsor=1"
+      }
+    },
     "node_modules/obuf": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/obuf/-/obuf-1.1.2.tgz",
@@ -8654,6 +8691,24 @@
         "url": "https://opencollective.com/unified"
       }
     },
+    "node_modules/unist-util-select": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/unist-util-select/-/unist-util-select-5.1.0.tgz",
+      "integrity": "sha512-4A5mfokSHG/rNQ4g7gSbdEs+H586xyd24sdJqF1IWamqrLHvYb+DH48fzxowyOhOfK7YSqX+XlCojAyuuyyT2A==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@types/unist": "^3.0.0",
+        "css-selector-parser": "^3.0.0",
+        "devlop": "^1.1.0",
+        "nth-check": "^2.0.0",
+        "zwitch": "^2.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/unified"
+      }
+    },
     "node_modules/unist-util-stringify-position": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/unist-util-stringify-position/-/unist-util-stringify-position-4.0.0.tgz",

package.json

@@ -74,7 +74,7 @@
     "resize-sensor": "^0.0.6",
     "rimraf": "^5.0.7",
     "sharp": "^0.33.4",
-    "typescript": "^5.4.5",
+    "typescript": "^5.5.2",
-    "unist-util-visit": "^5.0.0"
+    "unist-util-select": "^5.1.0"
   }
 }

plugins/images.ts

@@ -1,8 +1,10 @@
 import type { Literal, Node, Parent } from 'unist';
-import { visit } from 'unist-util-visit';
+import { selectAll } from 'unist-util-select';
+import options from '../options';
 import { imageMetadata } from '../src/helpers/images';
+import { urlJoin } from '../src/helpers/tools';
 
-export type ImageNode = Parent & {
+type ImageNode = Parent & {
   url: string;
   alt: string;
   name: string;
@@ -11,43 +13,72 @@ export type ImageNode = Parent & {
   attributes: (Literal & { name: string })[];
 };
 
+type MdxJsxAttribute = {
+  type: 'mdxJsxAttribute';
+  name: string;
+  value: string;
+};
+
+type MdxJsxFlowElement = Parent & {
+  name: string;
+  attributes: MdxJsxAttribute[];
+};
+
 export const astroImage = () => {
   return async (tree: Node) => {
-    const images: ImageNode[] = [];
+    // Find all the img node.
-
+    const imgs = selectAll('mdxJsxFlowElement', tree)
-    // Find all the local image node.
+      .map((node) => node as MdxJsxFlowElement)
-    visit(tree, 'image', (node: Node, _, __: Parent) => {
+      .filter((node) => node.name === 'img');
-      const imageNode = node as ImageNode;
+    for (const img of imgs) {
-      // Skip remote images.
+      const srcAttribute = img.attributes.find((attribute) => attribute.name === 'src');
-      if (imageNode.url.startsWith('http')) {
+      if (srcAttribute) {
-        return;
+        const src = srcAttribute.value;
+        if (src.startsWith('/')) {
+          srcAttribute.value = urlJoin(options.assetsPrefix(), src);
+        }
       }
+    }
 
-      images.push(imageNode);
+    // Find all the image node.
-    });
+    const imageNodes = selectAll('image', tree)
+      .map((node) => node as ImageNode)
+      .filter((imageNode) => !imageNode.url.startsWith('http'))
+      .map(transformAstroImage);
 
-    // Process images.
+    // Process image with blur metadata.
-    await Promise.all(images.map(transformAstroImage));
+    await Promise.all(imageNodes);
     return tree;
   };
 };
 
 const transformAstroImage = async (imageNode: ImageNode) => {
-  const metadata = await imageMetadata(imageNode.url);
-  if (metadata == null) {
-    throw new Error(`Failed to get image metadata: ${imageNode.url}`);
-  }
-
-  // Convert original node to next/image
   imageNode.type = 'mdxJsxFlowElement';
   imageNode.name = 'Image';
-  imageNode.attributes = [
+
-    { type: 'mdxJsxAttribute', name: 'alt', value: imageNode.alt },
+  try {
-    { type: 'mdxJsxAttribute', name: 'src', value: metadata.src },
+    const metadata = await imageMetadata(imageNode.url);
-    { type: 'mdxJsxAttribute', name: 'width', value: imageNode.width ?? metadata.width },
+    if (metadata == null) {
-    { type: 'mdxJsxAttribute', name: 'height', value: imageNode.height ?? metadata.height },
+      throw new Error(`Failed to get image metadata: ${imageNode.url}`);
-    { type: 'mdxJsxAttribute', name: 'blurDataURL', value: metadata.blurDataURL },
+    }
-    { type: 'mdxJsxAttribute', name: 'blurWidth', value: metadata.blurWidth },
+
-    { type: 'mdxJsxAttribute', name: 'blurHeight', value: metadata.blurHeight },
+    imageNode.attributes = [
-  ];
+      { type: 'mdxJsxAttribute', name: 'alt', value: imageNode.alt },
+      { type: 'mdxJsxAttribute', name: 'src', value: metadata.src },
+      { type: 'mdxJsxAttribute', name: 'width', value: imageNode.width ?? metadata.width },
+      { type: 'mdxJsxAttribute', name: 'height', value: imageNode.height ?? metadata.height },
+      { type: 'mdxJsxAttribute', name: 'blurDataURL', value: metadata.blurDataURL },
+      { type: 'mdxJsxAttribute', name: 'blurWidth', value: metadata.blurWidth },
+      { type: 'mdxJsxAttribute', name: 'blurHeight', value: metadata.blurHeight },
+    ];
+  } catch (error) {
+    imageNode.attributes = [
+      { type: 'mdxJsxAttribute', name: 'alt', value: imageNode.alt },
+      {
+        type: 'mdxJsxAttribute',
+        name: 'src',
+        value: imageNode.url.startsWith('/') ? urlJoin(options.assetsPrefix(), imageNode.url) : imageNode.url,
+      },
+    ];
+  }
 };

src/components/page/post/PostCategory.astro

@@ -6,7 +6,7 @@ import options from '@/options';
 const pinnedSlug = options.settings.post.category ?? [];
 const pinnedCategories = pinnedSlug
   .map((slug) => getCategory(undefined, slug))
-  .flatMap((category) => (category !== undefined ? [category] : []));
+  .filter((category) => category !== undefined);
 ---
 
 <div class="row g-2 g-md-4 list-grouped mt-3 mt-md-4">

src/content/posts/2024/2024-04-12-algo-find-the-lowest-costs.mdx

@@ -46,28 +46,28 @@ cover: /images/2024/04/2024041405050511.png
 
 这也使得这道题在弄懂原理后相当无趣，但考虑我这朋友确实经验尚浅，所以我还是给他继续讲下去，顺带着给了代码实现。这篇博客便是当时内容的摘录整理。
 
-<img src={'/images/recaps/algo-minimal-costs/step1.svg'} width={400} height={400} alt={'Step 1'} />
+<img src='/images/recaps/algo-minimal-costs/step1.svg' width='400px' height='400px' alt='Step 1' />
 
 <center>
 	做任何算法题，第一步是理解题意，第二步是设想最简单的情况，再慢慢推导到复杂情况。首先，我们先不考虑存在阻塞的情况。最简单场景里，顾客和维修点在一个
 	1 x 1 的格子的一条边上，这个时候他们间的最短距离为 1。
 </center>
 
-<img src={'/images/recaps/algo-minimal-costs/step2.svg'} width={400} height={400} alt={'Step 2'} />
+<img src='/images/recaps/algo-minimal-costs/step2.svg' width='400px' height='400px' alt='Step 2' />
 
 <center>然后我们更进一步，如果他们在一个格子的对角线上呢？他们间的最短路径有两条，为 2。</center>
 
-<img src={'/images/recaps/algo-minimal-costs/step3.svg'} width={400} height={400} alt={'Step 3'} />
+<img src='/images/recaps/algo-minimal-costs/step3.svg' width='400px' height='400px' alt='Step 3' />
 
 <center>
 	结合初中的几何学知识，我们首先知道一个基本知识，两点之间，直线最短。所以，维修点和顾客在同一条直线上时，他们之间的距离就是直线距离。
 </center>
 
-<img src={'/images/recaps/algo-minimal-costs/step4.svg'} width={800} height={400} alt={'Step 4'} />
+<img src='/images/recaps/algo-minimal-costs/step4.svg' width='800px' height='400px' alt='Step 4' />
 
 <center>然后我们再稍微复杂一点，此时顾客和维修点之间是田字格，最短路径就有三条，距离为 3。</center>
 
-<img src={'/images/recaps/algo-minimal-costs/step5.svg'} width={800} height={400} alt={'Step 5'} />
+<img src='/images/recaps/algo-minimal-costs/step5.svg' width='800px' height='400px' alt='Step 5' />
 
 <center>
 	等到田字格的时候，相信聪明的你已经发现了规律。那就是顾客到维修点的最短距离，等于他们所形成的矩形的横纵两条边边长的总和。按照上面右侧图片所示的箭头所行走的距离都等于这个最短路径。
@@ -75,7 +75,7 @@ cover: /images/2024/04/2024041405050511.png
 
 一般情况下，面试场景的编码题已经可以开始写了。对应的编程思路就是，从维修点出发，在与顾客构成的矩形边界里面，不断逼近，只要能走通那么我们之间就有了最短距离。再把不同维修点到顾客的最短距离排序，选出最小的距离来进行计算费用。
 
-<img src={'/images/recaps/algo-minimal-costs/step6.svg'} width={800} height={400} alt={'Step 6'} />
+<img src='/images/recaps/algo-minimal-costs/step6.svg' width='800px' height='400px' alt='Step 6' />
 
 倘若以上面的推论作为最终编码的方式，虽然不能说完全错误，但是在当下这个面试很卷的时代，还是有可能被 PASS，为什么呢？因为我们还没有引入阻塞的概念。我们随便画两种阻塞的情况，并且假定这里都属于在当时条件下的最短路径，那么阁下又该如何应对？😆
 
@@ -88,11 +88,11 @@ cover: /images/2024/04/2024041405050511.png
 
 以此为基础，我们就可以稍微来复习一下大学的算法知识了，贪心算法（贪婪算法）。贪心算法的定义网上随随便便都能找到，这里就不再复述，我们更多地是需要去思考在这个场景的贪心算法如何使用。
 
-<img src={'/images/recaps/algo-minimal-costs/step7.svg'} width={800} height={400} alt={'Step 7'} />
+<img src='/images/recaps/algo-minimal-costs/step7.svg' width='800px' height='400px' alt='Step 7' />
 
 贪心算法的第一步，就是找寻从顾客开始，所有可能能行走方向距离为 1 的点有哪些（图中蓝色的点）。接着，我们可以以这些距离为 1 的点为基础，去找寻所有距离为 2 的点（图中绿色的点）。以此类推，直到所有的点都没有下一个可以行走的点了。而每计算一次距离为 N 的点的时候，都可以尝试看看里面是否有对应的维修点，如果有，那么终止检索，这个 N 便是最短距离。
 
-<img src={'/images/recaps/algo-minimal-costs/step8.svg'} width={800} height={400} alt={'Step 8'} />
+<img src='/images/recaps/algo-minimal-costs/step8.svg' width='800px' height='400px' alt='Step 8' />
 
 如上图所示，在我们查找距离为 4 的点的时候，我们就能找到目标维修店，那么我们可以认定，起最短距离就是 4。
 
@@ -166,3 +166,5 @@ private boolean availablePoint(int[][] routines, int x, int y) {
     return x >= 0 && x < routines.length && y >= 0 && y <= routines[0].length && (routines[x][y] == 0 || routines[x][y] == -1);
 }
 ```
+
+![Fin](/images/2024/06/2024062101010412.jpg)

src/pages/search/index.astro

@@ -13,7 +13,7 @@ const title = `${query} 查询结果`;
 
 const searchResults = searchPosts(query)
   .map((slug) => posts.find((post) => post.slug === slug))
-  .flatMap((post) => (post == null ? [] : [post]))
+  .filter((post) => post !== undefined)
   .slice(0, options.settings.pagination.search);
 ---