Add basic operations

Author: davidnguyen11

.gitignore

@@ -1 +1,3 @@
-node_modules
+node_modules/
+dist/
+coverage/

babel.config.js

@@ -0,0 +1,7 @@
+// babel.config.js
+module.exports = {
+  presets: [
+    ['@babel/preset-env', { targets: { node: 'current' } }],
+    '@babel/preset-typescript',
+  ],
+};

dist/heap.js

@@ -0,0 +1,24 @@
+const ignores = ['/node_modules/', '__mocks__'];
+
+module.exports = {
+  collectCoverageFrom: ['src/**/*.+(ts|tsx|js)'],
+  testMatch: ['**/test/**/*.spec.+(ts|tsx|js)'],
+  testPathIgnorePatterns: [...ignores],
+  coveragePathIgnorePatterns: [...ignores, 'src/(umd|cjs|esm)-entry.js$'],
+  transformIgnorePatterns: ['[/\\\\]node_modules[/\\\\].+\\.(js|jsx)$'],
+  coverageDirectory: './coverage',
+  collectCoverage: true,
+  coverageThreshold: {
+    global: {
+      branches: 80,
+      functions: 100,
+      lines: 100,
+      statements: 100
+    }
+  },
+  moduleFileExtensions: ['ts', 'tsx', 'js'],
+  transform: {
+    '^.+\\.(ts|tsx)$': 'ts-jest'
+  },
+  verbose: true
+};