feat: add dvisvgm

src/converters/dvisvgm.ts

@@ -0,0 +1,52 @@
+import { execFile } from "node:child_process";
+
+export const properties = {
+  from: {
+    images: ["dvi", "xdv", "pdf", "eps"],
+  },
+  to: {
+    images: ["svg", "svgz"],
+  },
+};
+
+export function convert(
+  filePath: string,
+  fileType: string,
+  convertTo: string,
+  targetPath: string,
+  // eslint-disable-next-line @typescript-eslint/no-unused-vars
+  options?: unknown,
+): Promise<string> {
+  const inputArgs: string[] = [];
+  if (fileType === "eps") {
+    inputArgs.push("--eps");
+  }
+  if (fileType === "pdf") {
+    inputArgs.push("--pdf");
+  }
+  if (convertTo === "svgz") {
+    inputArgs.push("-z");
+  }
+
+  return new Promise((resolve, reject) => {
+    execFile(
+      "dvisvgm",
+      [...inputArgs, filePath, "-o", targetPath],
+      (error, stdout, stderr) => {
+        if (error) {
+          reject(`error: ${error}`);
+        }
+
+        if (stdout) {
+          console.log(`stdout: ${stdout}`);
+        }
+
+        if (stderr) {
+          console.error(`stderr: ${stderr}`);
+        }
+
+        resolve("Done");
+      },
+    );
+  });
+}