feat(toFormData): Add toFormData
#726
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lukaszkowalik2
changed the title
toFormData
Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## main #726 +/- ##
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Coverage 99.75% 99.75%
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Files 468 470 +2
Lines 4439 4492 +53
Branches 1309 1339 +30
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+ Hits 4428 4481 +53
Misses 11 11 🚀 New features to boost your workflow:
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Let me review this weekend :) |
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Hold off on reviewing this for now. I'm going to refactor it a bit and add some configuration to it. Then I'll make another PR after you (hopefully) accept this one. After that, I'll add a function called fromFormData to convert FormData to an object. |
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@raon0211 I’ve added the changes I wanted, so you can go ahead with the review whenever you’re ready. Thanks! 😃 |
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Thanks! This is a new function so I might need some time to think. Let me review this in a week. |
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Pull Request Overview
The PR introduces a new toFormData function that converts JavaScript objects to FormData instances with extensive configuration options. The implementation is inspired by the object-to-formdata library but expands support to additional data types like BigInt and Symbol handling.
- Adds a comprehensive
toFormDatafunction with support for nested objects, arrays, files, and various JavaScript data types - Implements extensive configuration options for customizing FormData conversion behavior
- Provides thorough test coverage with 476 test lines covering all functionality and edge cases
Reviewed Changes
Copilot reviewed 6 out of 6 changed files in this pull request and generated 2 comments.
Show a summary per file
| File | Description |
|---|---|
| src/object/toFormData.ts | Core implementation of the toFormData function with recursive object conversion and configuration options |
| src/object/toFormData.spec.ts | Comprehensive test suite covering all data types, configurations, and edge cases |
| docs/reference/object/toFormData.md | English documentation with detailed examples and configuration options |
| docs/zh_hans/reference/object/toFormData.md | Simplified Chinese translation of the documentation |
| docs/ko/reference/object/toFormData.md | Korean translation of the documentation |
| docs/ja/reference/object/toFormData.md | Japanese translation of the documentation |
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src/object/toFormData.ts
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| } else if ((isFile(data) || isBlob(data)) && parentKey) { | ||
| formData.append(parentKey, data); | ||
| } else if (typeof data === 'bigint' && parentKey) { | ||
| formData.append(parentKey, (data as bigint).toString()); |
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The type cast (data as bigint) is unnecessary since the condition typeof data === 'bigint' already ensures the type. Remove the cast for cleaner code.
| formData.append(parentKey, (data as bigint).toString()); | |
| formData.append(parentKey, data.toString()); |
| } | ||
| } else if (parentKey) { | ||
| formData.append(parentKey, String(data)); | ||
| } else { |
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This error will be thrown for valid primitive types like strings and numbers when parentKey is undefined or empty. The condition should check if data is a primitive that can be converted to string before throwing the error.
| } else { | |
| } else { | |
| // If data is a serializable primitive but parentKey is missing, throw a more descriptive error | |
| if ( | |
| parentKey == null && | |
| ( | |
| typeof data === 'string' || | |
| typeof data === 'number' || | |
| typeof data === 'boolean' || | |
| typeof data === 'bigint' | |
| ) | |
| ) { | |
| throw new TypeError('Cannot serialize value without a key (parentKey is required for primitives)'); | |
| } |
4 participants
I’ve added the
toFormDatafunction to the library. The initial idea was inspired by the object-to-formdata project. I’ve expanded on that project by adding support for additional JavaScript data types likeBigIntandSymbol.Key Additions:
BigIntvalues to strings, ensuring they can be included inFormData.Symbolvalues will throw an error, as they cannot be serialized.Additionally, I attempted to make the function more type-safe, but due to the limitations outlined in this TypeScript issue, it’s not yet possible to implement a fully generic type-safe version of
FormData.Request for Help:
File: I'm having trouble getting the tests involvingFileto work in a CI environment. Any guidance on how to resolve this would be greatly appreciated!Thanks in advance to anyone who can assist!