KaneAI - World’s First E2E Software Testing Agent.Signup for Private Beta Join TestMu Conference

How to use isMemberOrCallOrNonNullExpression method in stryker-parent

Best JavaScript code snippet using stryker-parent

expression-mutant-placer.ts

Source:expression-mutant-placer.ts

...51}52function nameIfAnonymous(path: NodePath<babel.types.Expression>): babel.types.Expression {53  return classOrFunctionExpressionNamedIfNeeded(path) ?? arrowFunctionExpressionNamedIfNeeded(path) ?? path.node;54}55function isMemberOrCallOrNonNullExpression(path: NodePath) {56  return isCallExpression(path) || isMemberOrNonNullExpression(path);57}58function isMemberOrNonNullExpression(59  path: NodePath60): path is NodePath<babel.types.MemberExpression | babel.types.OptionalMemberExpression | babel.types.TSNonNullExpression> {61  return isMemberExpression(path) || path.isTSNonNullExpression();62}63function isMemberExpression(path: NodePath): path is NodePath<babel.types.MemberExpression | babel.types.OptionalMemberExpression> {64  return path.isMemberExpression() || path.isOptionalMemberExpression();65}66function isCallExpression(path: NodePath): path is NodePath<babel.types.CallExpression | babel.types.OptionalCallExpression> {67  return path.isCallExpression() || path.isOptionalCallExpression();68}69function isValidExpression(path: NodePath<babel.types.Expression>) {70  const parent = path.parentPath;71  return !isObjectPropertyKey() && !isPartOfChain() && !parent.isTaggedTemplateExpression();72  /**73   * Determines if the expression is property of an object.74   * @example75   * const a = {76   *  'foo': 'bar' // 'foo' here is an object property77   * };78   */79  function isObjectPropertyKey() {80    return parent.isObjectProperty() && parent.node.key === path.node;81  }82  /**83   * Determines if the expression is part of a call/member chain.84   * @example85   * // bar is part of chain, foo is NOT part of the chain:86   * foo.bar.baz();87   * foo.bar?.baz()88   * foo.bar;89   * foo.bar!;90   * foo.bar();91   * foo?.bar();92   * baz[foo.bar()]93   * bar?.baz[0]94   */95  function isPartOfChain() {96    return (97      isMemberOrCallOrNonNullExpression(path) &&98      ((isMemberExpression(parent) && !(parent.node.computed && parent.node.property === path.node)) ||99        parent.isTSNonNullExpression() ||100        (isCallExpression(parent) && parent.node.callee === path.node))101    );102  }103}104/**105 * Places the mutants with a conditional expression: `global.activeMutant === 1? mutatedCode : originalCode`;106 */107export const expressionMutantPlacer: MutantPlacer<babel.types.Expression> = {108  name: 'expressionMutantPlacer',109  canPlace(path) {110    return path.isExpression() && isValidExpression(path);111  },...

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.