text: import Long from "long";
  import { Types } from "./types";
  import { byteArrayToString } from "./encodingutils";
  import { Mapping } from "./mapping";
  
  /* eslint-disable no-use-before-define */
  const parserForType = {
      [Types.uint8]: parserForArrayType(Uint8Array, 1),
      [Types.int16]: parserForArrayType(Int16Array, 2),
      [Types.uint16]: parserForArrayType(Uint16Array, 2),
      [Types.int32]: parserForArrayType(Int32Array, 4),
      [Types.uint32]: parserForArrayType(Uint32Array, 4),
      [Types.int64]: parserForLong(false),
      [Types.uint64]: parserForLong(true),
      [Types.double]: parserForArrayType(Float64Array, 8),
      [Types.float]: parserForArrayType(Float32Array, 4),
      [Types.string]: parseString,
      [Types.bool]: parseBool,
      [Types.object]: parseObject,
      [Types.array]: parseArray,
      [Types.guid]: parseGuid,
  };
  /* eslint-enable no-use-before-define */
  
  function typedParse(target, mapping) {
      const parser = parserForType[target[0]];
      return parser(target.subarray(1), mapping);
  }
  
  const stringHeaders = [
      { type: Types.uint8, byteLength: 1 },
      { type: Types.uint16, byteLength: 2 },
      { type: Types.uint32, byteLength: 4 },
  ];
  
  function parseVariableLengthHeaders(target) {
      const dataView = new DataView(new Uint8Array(target).buffer);
  
      let value = dataView.getUint8(0);
      let offset = 1;
  
      if (value === 255) {
          value = dataView.getUint16(1, true);
          offset = 3;
          if (value === 65535) {
              value = dataView.getUnt32(3, true);
              offset = 7;
          }
      }
  
      const nextTarget = target.subarray(offset);
  
      return { value, nextTarget };
  }
  
  function parseString(target) {
      let nextTarget = target;
      let value = "";
  
      for (const header of stringHeaders) {
          const parser = parserForType[header.type];
          const maxValue = Math.pow(2, 8 * header.byteLength) - 1;
          const parsedLength = parser(nextTarget);
          nextTarget = parsedLength.nextTarget;
  
          if (parsedLength.value < maxValue) {
              value = byteArrayToString(nextTarget.subarray(0, parsedLength.value));
              nextTarget = nextTarget.subarray(parsedLength.value);
              break;
          }
      }
  
      return { value, nextTarget };
  }
  
  function parseKey(target, mapping) {
      const keyLength = target[0];
      let value = "";
      let nextTarget = target;
      if (keyLength === 0) {
          const shortKey = target[1];
          value = mapping.getKey(shortKey);
          nextTarget = nextTarget.subarray(2);
      } else {
          const parsedValue = parseString(target);
          value = parsedValue.value;
          nextTarget = parsedValue.nextTarget;
      }
  
      return { value, nextTarget };
  }
  
  function parseObject(target, mapping) {
      const parsedLength = parseVariableLengthHeaders(target);
  
      const numKeys = parsedLength.value;
      let nextTarget = parsedLength.nextTarget;
  
      const value = {};
      for (let i = 0; i < numKeys; i++) {
          const parsedKey = parseKey(nextTarget, mapping);
          nextTarget = parsedKey.nextTarget;
  
          const parsedValue = typedParse(nextTarget);
          value[parsedKey.value] = parsedValue.value;
          nextTarget = parsedValue.nextTarget;
      }
  
      return { value, nextTarget };
  }
  
  function parseArray(target, mapping) {
      const parsedLength = parseVariableLengthHeaders(target);
  
      const numElements = parsedLength.value;
      let nextTarget = parsedLength.nextTarget;
  
      const parser = parserForType[nextTarget[0]];
      const value = [];
      nextTarget = nextTarget.subarray(1);
  
      for (let i = 0; i < numElements; i++) {
          const parsedValue = parser(nextTarget, mapping);
          value.push(parsedValue.value);
          nextTarget = parsedValue.nextTarget;
      }
  
      return { value, nextTarget };
  }
  
  function parserForArrayType(ArrayType, byteLength) {
      return (target) => {
          const byteBuffer = target.buffer.slice(target.byteOffset, target.byteOffset + byteLength);
          return {
              value: new ArrayType(byteBuffer)[0],
              nextTarget: target.subarray(byteLength),
          };
      };
  }
  
  function parserForLong(unsigned) {
      return (target) => {
          const byteBuffer = target.buffer.slice(target.byteOffset, target.byteOffset + 8);
          const array = new Uint32Array(byteBuffer);
          return {
              value: new Long(array[0], array[1], unsigned),
              nextTarget: target.subarray(8),
          };
      };
  }
  
  function parseBool(target) {
      return {
          value: target[0] === 1,
          nextTarget: target.subarray(1),
      };
  }
  
  function parseGuid(target) {
      return {
          value: target.subarray(0, 16),
          nextTarget: target.subarray(16),
      };
  }
  
  export function parse(target, mapping = new Mapping()) {
      return typedParse(target, mapping).value;
  }
  