@effect-ts/system/Collections/Immutable/Chunk/api/dedupe.js

Effect-TS is a zero dependency set of libraries to write highly productive, purely functional TypeScript at scale.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.dedupe = dedupe;

var St = /*#__PURE__*/_interopRequireWildcard( /*#__PURE__*/require("../../../../Structural/index.js"));

var Chunk = /*#__PURE__*/_interopRequireWildcard( /*#__PURE__*/require("../core.js"));

var forEach = /*#__PURE__*/_interopRequireWildcard( /*#__PURE__*/require("./forEach.js"));

function _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== "function") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function (nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }

function _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== "default" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }

// ets_tracing: off

/**
 * Deduplicates adjacent elements that are identical.
 */
function dedupe(chunk) {
  const builder = Chunk.builder();
  let lastA = null;
  forEach.forEach_(chunk, a => {
    if (!St.equals(lastA, a)) {
      builder.append(a);
      lastA = a;
    }
  });
  return builder.build();
}
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