开发环境可以正常运行，打包后执行到 const mp3enc = new lamejs.Mp3Encoder(channels, sampleRate, 128)的时候就报错 TypeError: Cannot read properties of undefined (reading 'SHORT_TYPE')

[hqiaozhang]

开发环境可以正常运行，打包后执行到 const mp3enc = new lamejs.Mp3Encoder(channels, sampleRate, 128)的时候就报错
TypeError: Cannot read properties of undefined (reading 'SHORT_TYPE')

=====

import lamejs from 'lamejs'
import MPEGMode from 'lamejs/src/js/MPEGMode'
import Lame from 'lamejs/src/js/Lame'
import BitStream from 'lamejs/src/js/BitStream'

if (globalThis) {
(globalThis as any).MPEGMode = MPEGMode
;(globalThis as any).Lame = Lame
;(globalThis as any).BitStream = BitStream
}

export const convertToMp3 = (recorder: any) => {
const wav = lamejs.WavHeader.readHeader(recorder.getWAV())
console.log('wav===', wav)
const { channels, sampleRate } = wav
console.log(channels, sampleRate)
console.log('lamejs==', lamejs)
const mp3enc = new lamejs.Mp3Encoder(channels, sampleRate, 128)
console.log('mp3enc===', mp3enc)
const result = recorder.getChannelData()
const buffer = []

const leftData = result.left && new Int16Array(result.left.buffer, 0, result.left.byteLength / 2)
const rightData = result.right && new Int16Array(result.right.buffer, 0, result.right.byteLength / 2)
const remaining = leftData.length + (rightData ? rightData.length : 0)

const maxSamples = 1152
for (let i = 0; i < remaining; i += maxSamples) {
const left = leftData.subarray(i, i + maxSamples)
let right = null
let mp3buf = null

if (channels === 2) {
  right = rightData.subarray(i, i + maxSamples)
  mp3buf = mp3enc.encodeBuffer(left, right)
}
else {
  mp3buf = mp3enc.encodeBuffer(left)
}

if (mp3buf && mp3buf.length > 0)
  buffer.push(mp3buf)

}

const enc = mp3enc.flush()

if (enc.length > 0)
buffer.push(enc)

return new Blob(buffer, { type: 'audio/mp3' })
}