| 51 | } |
| 52 | |
| 53 | function process(msg: InMessage): OutMessage { |
| 54 | const lines = msg.markdown.split("\n"); |
| 55 | const tokens: TokenLine[] = lines.map(classifyLine); |
| 56 | const headings = tokens |
| 57 | .filter((t): t is TokenLine & { type: "heading" } => t.type === "heading") |
| 58 | .map((t) => ({ level: t.level!, text: t.content })); |
| 59 | const codeBlockCount = tokens.filter((t) => t.type === "code-fence").length; |
| 60 | |
| 61 | return { id: msg.id, tokens, headings, codeBlockCount }; |
| 62 | } |
| 63 | |
| 64 | self.addEventListener("message", (e: MessageEvent<InMessage>) => { |
| 65 | self.postMessage(process(e.data)); |