forked from M3-Academy/challenge-algorithms-v2.0
218 lines
5.3 KiB
JavaScript
218 lines
5.3 KiB
JavaScript
'use strict';
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Object.defineProperty(exports, '__esModule', {
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value: true
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});
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exports.test = exports.serialize = exports.default = void 0;
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var _collections = require('../collections');
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/**
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* Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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// SENTINEL constants are from https://github.com/facebook/immutable-js
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const IS_ITERABLE_SENTINEL = '@@__IMMUTABLE_ITERABLE__@@';
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const IS_LIST_SENTINEL = '@@__IMMUTABLE_LIST__@@';
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const IS_KEYED_SENTINEL = '@@__IMMUTABLE_KEYED__@@';
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const IS_MAP_SENTINEL = '@@__IMMUTABLE_MAP__@@';
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const IS_ORDERED_SENTINEL = '@@__IMMUTABLE_ORDERED__@@';
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const IS_RECORD_SENTINEL = '@@__IMMUTABLE_RECORD__@@'; // immutable v4
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const IS_SEQ_SENTINEL = '@@__IMMUTABLE_SEQ__@@';
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const IS_SET_SENTINEL = '@@__IMMUTABLE_SET__@@';
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const IS_STACK_SENTINEL = '@@__IMMUTABLE_STACK__@@';
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const getImmutableName = name => `Immutable.${name}`;
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const printAsLeaf = name => `[${name}]`;
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const SPACE = ' ';
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const LAZY = '…'; // Seq is lazy if it calls a method like filter
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const printImmutableEntries = (
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val,
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config,
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indentation,
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depth,
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refs,
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printer,
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type
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) =>
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++depth > config.maxDepth
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? printAsLeaf(getImmutableName(type))
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: `${getImmutableName(type) + SPACE}{${(0,
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_collections.printIteratorEntries)(
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val.entries(),
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config,
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indentation,
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depth,
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refs,
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printer
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)}}`;
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// Record has an entries method because it is a collection in immutable v3.
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// Return an iterator for Immutable Record from version v3 or v4.
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function getRecordEntries(val) {
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let i = 0;
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return {
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next() {
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if (i < val._keys.length) {
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const key = val._keys[i++];
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return {
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done: false,
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value: [key, val.get(key)]
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};
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}
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return {
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done: true,
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value: undefined
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};
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}
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};
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}
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const printImmutableRecord = (
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val,
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config,
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indentation,
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depth,
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refs,
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printer
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) => {
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// _name property is defined only for an Immutable Record instance
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// which was constructed with a second optional descriptive name arg
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const name = getImmutableName(val._name || 'Record');
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return ++depth > config.maxDepth
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? printAsLeaf(name)
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: `${name + SPACE}{${(0, _collections.printIteratorEntries)(
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getRecordEntries(val),
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config,
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indentation,
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depth,
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refs,
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printer
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)}}`;
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};
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const printImmutableSeq = (val, config, indentation, depth, refs, printer) => {
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const name = getImmutableName('Seq');
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if (++depth > config.maxDepth) {
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return printAsLeaf(name);
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}
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if (val[IS_KEYED_SENTINEL]) {
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return `${name + SPACE}{${
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// from Immutable collection of entries or from ECMAScript object
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val._iter || val._object
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? (0, _collections.printIteratorEntries)(
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val.entries(),
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config,
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indentation,
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depth,
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refs,
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printer
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)
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: LAZY
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}}`;
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}
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return `${name + SPACE}[${
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val._iter ||
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// from Immutable collection of values
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val._array ||
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// from ECMAScript array
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val._collection ||
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// from ECMAScript collection in immutable v4
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val._iterable // from ECMAScript collection in immutable v3
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? (0, _collections.printIteratorValues)(
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val.values(),
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config,
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indentation,
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depth,
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refs,
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printer
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)
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: LAZY
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}]`;
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};
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const printImmutableValues = (
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val,
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config,
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indentation,
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depth,
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refs,
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printer,
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type
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) =>
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++depth > config.maxDepth
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? printAsLeaf(getImmutableName(type))
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: `${getImmutableName(type) + SPACE}[${(0,
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_collections.printIteratorValues)(
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val.values(),
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config,
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indentation,
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depth,
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refs,
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printer
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)}]`;
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const serialize = (val, config, indentation, depth, refs, printer) => {
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if (val[IS_MAP_SENTINEL]) {
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return printImmutableEntries(
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val,
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config,
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indentation,
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depth,
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refs,
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printer,
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val[IS_ORDERED_SENTINEL] ? 'OrderedMap' : 'Map'
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);
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}
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if (val[IS_LIST_SENTINEL]) {
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return printImmutableValues(
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val,
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config,
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indentation,
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depth,
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refs,
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printer,
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'List'
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);
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}
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if (val[IS_SET_SENTINEL]) {
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return printImmutableValues(
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val,
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config,
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indentation,
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depth,
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refs,
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printer,
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val[IS_ORDERED_SENTINEL] ? 'OrderedSet' : 'Set'
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);
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}
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if (val[IS_STACK_SENTINEL]) {
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return printImmutableValues(
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val,
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config,
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indentation,
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depth,
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refs,
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printer,
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'Stack'
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);
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}
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if (val[IS_SEQ_SENTINEL]) {
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return printImmutableSeq(val, config, indentation, depth, refs, printer);
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}
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// For compatibility with immutable v3 and v4, let record be the default.
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return printImmutableRecord(val, config, indentation, depth, refs, printer);
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};
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// Explicitly comparing sentinel properties to true avoids false positive
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// when mock identity-obj-proxy returns the key as the value for any key.
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exports.serialize = serialize;
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const test = val =>
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val &&
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(val[IS_ITERABLE_SENTINEL] === true || val[IS_RECORD_SENTINEL] === true);
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exports.test = test;
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const plugin = {
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serialize,
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test
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};
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var _default = plugin;
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exports.default = _default;
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