--- ruleName: label-undefined description: Checks that labels are defined before usage. descriptionDetails: This rule is now implemented in the TypeScript compiler and does not need to be used. rationale: Using `break` or `continue` to go to an out-of-scope label is an error in JS. optionsDescription: Not configurable. options: null optionExamples: - 'true' type: functionality optionsJSON: 'null' layout: rule title: 'Rule: label-undefined' ---