@ckb-lumos/codec/lib/base.js

Make your own molecule binding in JavaScript(TypeScript)

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.createBytesCodec = createBytesCodec;
exports.createFixedBytesCodec = createFixedBytesCodec;
exports.isFixedCodec = isFixedCodec;
var _utils = require("./utils");
var _bytes = require("./bytes");
/* eslint-disable @typescript-eslint/no-explicit-any */

/**
 * Create a codec to deal with bytes-like data.
 * @param codec
 */
function createBytesCodec(codec) {
  return {
    pack: unpacked => codec.pack(unpacked),
    unpack: bytesLike => codec.unpack((0, _bytes.bytify)(bytesLike))
  };
}
function isFixedCodec(codec) {
  return (0, _utils.isObjectLike)(codec) && !!codec.__isFixedCodec__;
}
function createFixedBytesCodec(codec) {
  const byteLength = codec.byteLength;
  return {
    __isFixedCodec__: true,
    byteLength,
    ...createBytesCodec({
      pack: u => {
        const packed = codec.pack(u);
        (0, _utils.assertBufferLength)(packed, byteLength);
        return packed;
      },
      unpack: buf => {
        (0, _utils.assertBufferLength)(buf, byteLength);
        return codec.unpack(buf);
      }
    })
  };
}
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