instructionの名前とオペコードを https://webassembly.github.io/spec/core/appendix/index-instructions.html からスクレイピングするコード

getInstructionList.js

const convChr = (x) =>
  x
    .replaceAll(/[\u{1d400}-\u{1d419}]/gu, (x) =>
      String.fromCodePoint(x.codePointAt(0) - 0x1d400 + "A".codePointAt(0)),
    )
    .replaceAll(/[\u{1d434}-\u{1d44d}]/gu, (x) =>
      String.fromCodePoint(x.codePointAt(0) - 0x1d434 + "A".codePointAt(0)),
    )
    .replaceAll(/[\u{1d468}-\u{1d481}]/gu, (x) =>
      String.fromCodePoint(x.codePointAt(0) - 0x1d468 + "A".codePointAt(0)),
    )
    .replaceAll(/[\u{1d41a}-\u{1d433}]/gu, (x) =>
      String.fromCodePoint(x.codePointAt(0) - 0x1d41a + "a".codePointAt(0)),
    )
    .replaceAll(/[\u{1d44e}-\u{1d467}]/gu, (x) =>
      String.fromCodePoint(x.codePointAt(0) - 0x1d44e + "a".codePointAt(0)),
    );

export const opcode = [...document.querySelector("#index-of-instructions > table > tbody").children]
  .map((x, i) => [
    convChr(x.children[0].innerText.replaceAll("\n", "").split(/\s+/)[0]),
    convChr(x.children[1].innerText.replaceAll("\n", ""))
      .split(/\s+/)
      .map((x) => parseInt(x.replace(/^0x/, ""), 16)),
  ])
  .filter(([k]) => k != "(reserved)");