Marchenko Max V8

babel.config.js

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+module.exports = {
+  presets: ['@babel/preset-env'],
+};

libs/variant8.spec.js

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+const {arraySize, validate, _validate, validateIndex, resize, _resize, DimensionError} = require("./variant8")
+describe('arraySize', function() {
+  it('should return the correct size of a multi-dimensional array', function() {
+    var arr = [[[1, 2], [3, 4]], [[5, 6], [7, 8]]];
+    expect(arraySize(arr)).toEqual([2, 2, 2]);
+  });
+
+  it('should return an empty array if the input is not an array', function() {
+    var arr = 123; // not an array
+    expect(arraySize(arr)).toEqual([]);
+  });
+
+  it('should return an empty array if the input is an empty array', function() {
+    var arr = [];
+    expect(arraySize(arr)).toEqual([0]);
+  });
+});
+
+
+describe('validate', function() {
+  it('should throw a DimensionError if the array dimensions do not match the provided size', function() {
+    var arr = [[[1, 2], [3, 4]], [[5, 6], [7, 8]]];
+    var size = [2, 3, 2]; // dimensions do not match
+    expect(function() {
+      validate(arr, size);
+    }).toThrow(DimensionError);
+  });
+
+  it('should not throw any errors if the array dimensions match the provided size', function() {
+    var arr = [[[1, 2], [3, 4]], [[5, 6], [7, 8]]];
+    var size = [2, 2, 2]; // dimensions match
+    expect(function() {
+      validate(arr, size);
+    }).not.toThrow();
+  });
+});