@lobehub/ui/es/Markdown/plugins/rehypeKatex.mjs.map

Lobe UI is an open-source UI component library for building AIGC web apps

{"version":3,"file":"rehypeKatex.mjs","names":[],"sources":["../../../src/Markdown/plugins/rehypeKatex.ts"],"sourcesContent":["import type { ElementContent, Root } from 'hast';\nimport { fromHtmlIsomorphic } from 'hast-util-from-html-isomorphic';\nimport { toText } from 'hast-util-to-text';\nimport katex, { type KatexOptions } from 'katex';\nimport { SKIP, visitParents } from 'unist-util-visit-parents';\nimport type { VFile } from 'vfile';\n\n// 内联自 rehype-katex@7，因为它硬依赖 katex ^0.16，下游安装时会得到一份嵌套的\n// 0.16 渲染出 v0.18 之前的 class 名，与我们注入的 v0.18 样式表对不上。\n// 升级 rehype-katex 到支持 katex ^0.18 的版本后可以删掉本文件。\n\nexport type RehypeKatexOptions = Omit<KatexOptions, 'displayMode' | 'throwOnError'>;\n\nconst emptyClasses: unknown[] = [];\n\nexport const rehypeKatex =\n  (options?: RehypeKatexOptions) =>\n  (tree: Root, file: VFile): undefined => {\n    const settings = options || {};\n\n    visitParents(tree, 'element', (element, parents) => {\n      const classes = Array.isArray(element.properties.className)\n        ? element.properties.className\n        : emptyClasses;\n      const languageMath = classes.includes('language-math');\n      const mathDisplay = classes.includes('math-display');\n      const mathInline = classes.includes('math-inline');\n      let displayMode = mathDisplay;\n\n      if (!languageMath && !mathDisplay && !mathInline) return;\n\n      let parent: any = parents.at(-1);\n      let scope: any = element;\n\n      if (\n        element.tagName === 'code' &&\n        languageMath &&\n        parent &&\n        parent.type === 'element' &&\n        parent.tagName === 'pre'\n      ) {\n        scope = parent;\n        parent = parents.at(-2);\n        displayMode = true;\n      }\n\n      if (!parent) return;\n\n      const value = toText(scope, { whitespace: 'pre' });\n\n      let result: ElementContent[] | string | undefined;\n\n      try {\n        result = katex.renderToString(value, { ...settings, displayMode, throwOnError: true });\n      } catch (error) {\n        const cause = error as Error;\n\n        file.message('Could not render math with KaTeX', {\n          ancestors: [...parents, element],\n          cause,\n          place: element.position,\n          ruleId: cause.name.toLowerCase(),\n          source: 'rehype-katex',\n        });\n\n        try {\n          result = katex.renderToString(value, {\n            ...settings,\n            displayMode,\n            strict: 'ignore',\n            throwOnError: false,\n          });\n        } catch {\n          result = [\n            {\n              children: [{ type: 'text', value }],\n              properties: {\n                className: ['katex-error'],\n                style: 'color:' + (settings.errorColor || '#cc0000'),\n                title: String(error),\n              },\n              tagName: 'span',\n              type: 'element',\n            },\n          ];\n        }\n      }\n\n      if (typeof result === 'string') {\n        result = fromHtmlIsomorphic(result, { fragment: true }).children as ElementContent[];\n      }\n\n      const index = parent.children.indexOf(scope);\n      parent.children.splice(index, 1, ...result);\n      return SKIP;\n    });\n  };\n"],"mappings":";;;;;AAaA,MAAM,eAA0B,CAAC;AAEjC,MAAa,eACV,aACA,MAAY,SAA2B;CACtC,MAAM,WAAW,WAAW,CAAC;CAE7B,aAAa,MAAM,YAAY,SAAS,YAAY;EAClD,MAAM,UAAU,MAAM,QAAQ,QAAQ,WAAW,SAAS,IACtD,QAAQ,WAAW,YACnB;EACJ,MAAM,eAAe,QAAQ,SAAS,eAAe;EACrD,MAAM,cAAc,QAAQ,SAAS,cAAc;EACnD,MAAM,aAAa,QAAQ,SAAS,aAAa;EACjD,IAAI,cAAc;EAElB,IAAI,CAAC,gBAAgB,CAAC,eAAe,CAAC,YAAY;EAElD,IAAI,SAAc,QAAQ,GAAG,EAAE;EAC/B,IAAI,QAAa;EAEjB,IACE,QAAQ,YAAY,UACpB,gBACA,UACA,OAAO,SAAS,aAChB,OAAO,YAAY,OACnB;GACA,QAAQ;GACR,SAAS,QAAQ,GAAG,EAAE;GACtB,cAAc;EAChB;EAEA,IAAI,CAAC,QAAQ;EAEb,MAAM,QAAQ,OAAO,OAAO,EAAE,YAAY,MAAM,CAAC;EAEjD,IAAI;EAEJ,IAAI;GACF,SAAS,MAAM,eAAe,OAAO;IAAE,GAAG;IAAU;IAAa,cAAc;GAAK,CAAC;EACvF,SAAS,OAAO;GACd,MAAM,QAAQ;GAEd,KAAK,QAAQ,oCAAoC;IAC/C,WAAW,CAAC,GAAG,SAAS,OAAO;IAC/B;IACA,OAAO,QAAQ;IACf,QAAQ,MAAM,KAAK,YAAY;IAC/B,QAAQ;GACV,CAAC;GAED,IAAI;IACF,SAAS,MAAM,eAAe,OAAO;KACnC,GAAG;KACH;KACA,QAAQ;KACR,cAAc;IAChB,CAAC;GACH,QAAQ;IACN,SAAS,CACP;KACE,UAAU,CAAC;MAAE,MAAM;MAAQ;KAAM,CAAC;KAClC,YAAY;MACV,WAAW,CAAC,aAAa;MACzB,OAAO,YAAY,SAAS,cAAc;MAC1C,OAAO,OAAO,KAAK;KACrB;KACA,SAAS;KACT,MAAM;IACR,CACF;GACF;EACF;EAEA,IAAI,OAAO,WAAW,UACpB,SAAS,mBAAmB,QAAQ,EAAE,UAAU,KAAK,CAAC,CAAC,CAAC;EAG1D,MAAM,QAAQ,OAAO,SAAS,QAAQ,KAAK;EAC3C,OAAO,SAAS,OAAO,OAAO,GAAG,GAAG,MAAM;EAC1C,OAAO;CACT,CAAC;AACH"}