London | 26-ITP-May | Eyob Zeray | Sprint 2 | course work

[eyob-tech]

Learners, PR Template

Self checklist

• I have titled my PR with Region | Cohort | FirstName LastName | Sprint | Assignment Title
• My changes meet the requirements of the task
• I have tested my changes
• My changes follow the style guide

Changelist

• Fixed debug/address.js, debug/author.js, and debug/recipe.js — corrected property access, object iteration, and array-to-string logging bugs.
• Implemented implement/contains.js with tests for empty objects, existing/non-existent properties, and invalid input.
• Fixed implement/lookup.js (was an empty stub) to build a country-to-currency-code object from an array of pairs, with a test added for multiple codes.
• Fixed implement/querystring.js to correctly split only on the first = per pair, ignore empty key-value pairs, decode percent-encoded characters, and replace + with a space.
• Fixed implement/tally.js (was an empty stub) to count item frequency in an array and throw on invalid input, with a test added for the empty-array case.
• Fixed interpret/invert.js to correctly swap object keys and values, with written answers to the interpret questions (a–e) included as comments.

All tests pass locally (npm test).