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47 lines
1.9 KiB
Plaintext
47 lines
1.9 KiB
Plaintext
import { IsObject, IsDate, IsArray, IsTypedArray, IsValueType } from '../guard/index.mjs';
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// ------------------------------------------------------------------
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// Equality Checks
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// ------------------------------------------------------------------
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function ObjectType(left, right) {
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if (!IsObject(right))
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return false;
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const leftKeys = [...Object.keys(left), ...Object.getOwnPropertySymbols(left)];
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const rightKeys = [...Object.keys(right), ...Object.getOwnPropertySymbols(right)];
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if (leftKeys.length !== rightKeys.length)
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return false;
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return leftKeys.every((key) => Equal(left[key], right[key]));
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}
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function DateType(left, right) {
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return IsDate(right) && left.getTime() === right.getTime();
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}
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function ArrayType(left, right) {
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if (!IsArray(right) || left.length !== right.length)
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return false;
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return left.every((value, index) => Equal(value, right[index]));
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}
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function TypedArrayType(left, right) {
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if (!IsTypedArray(right) || left.length !== right.length || Object.getPrototypeOf(left).constructor.name !== Object.getPrototypeOf(right).constructor.name)
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return false;
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return left.every((value, index) => Equal(value, right[index]));
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}
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function ValueType(left, right) {
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return left === right;
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}
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// ------------------------------------------------------------------
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// Equal
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// ------------------------------------------------------------------
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/** Returns true if the left value deep-equals the right */
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export function Equal(left, right) {
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if (IsDate(left))
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return DateType(left, right);
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if (IsTypedArray(left))
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return TypedArrayType(left, right);
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if (IsArray(left))
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return ArrayType(left, right);
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if (IsObject(left))
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return ObjectType(left, right);
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if (IsValueType(left))
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return ValueType(left, right);
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throw new Error('ValueEquals: Unable to compare value');
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}
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