Fix type error (#27217)

web/types/lamejs.d.ts

@@ -0,0 +1,36 @@
+declare module 'lamejs' {
+  export class Mp3Encoder {
+    constructor(channels: number, sampleRate: number, bitRate: number)
+    encodeBuffer(left: Int16Array, right?: Int16Array | null): Int8Array
+    flush(): Int8Array
+  }
+
+  export class WavHeader {
+    static readHeader(data: DataView): {
+      channels: number
+      sampleRate: number
+    }
+  }
+
+  const lamejs: {
+    Mp3Encoder: typeof Mp3Encoder
+    WavHeader: typeof WavHeader
+  }
+
+  export default lamejs
+}
+
+declare module 'lamejs/src/js/MPEGMode' {
+  const MPEGMode: any
+  export default MPEGMode
+}
+
+declare module 'lamejs/src/js/Lame' {
+  const Lame: any
+  export default Lame
+}
+
+declare module 'lamejs/src/js/BitStream' {
+  const BitStream: any
+  export default BitStream
+}