Refactor Namespace Structure and Fix Abstractions for Lockfile and Fetcher

[kbukum1]

What are you trying to accomplish?

This PR refactors the namespace structure and introduces necessary abstractions to improve maintainability, consistency, and clarity in Dependabot’s architecture.

---

🔹 Key Changes:

• Refactored namespace structure to follow the format:

  Dependabot::{Language}::{PackageManager}
  

  • Shared logic is now under Dependabot::{Language}::Shared.
  • Package manager-specific logic is placed under Dependabot::{Language}::{PackageManager}.

📂 Updated Folder & Namespace Structure:

javascript/
├── javascript/
│   ├── bun/       → Dependabot::Javascript::Bun
│   ├── shared/    → Dependabot::Javascript::Shared
├── javascript.rb  → Dependabot::Javascript::Shared
├── bun.rb         → Dependabot::Javascript::Bun

---

🔹 Additional Refactors

• Introduced LockfileBase abstraction

  • Previously, BunLock was directly referenced in shared files.
  • Now, all lockfiles extend LockfileBase, ensuring modularity and scalability.

• Refactored Fetcher to use FileFetcherBase

  • Previously, Bun was referenced in shared fetchers.
  • Now, package managers inherit from FileFetcherBase, keeping shared code modular.

---

🔹 Anything you want to highlight for special attention from reviewers?

• These changes do not introduce functional modifications but improve clarity and structure.
• Please review:
  • Updated namespace structure for correctness and consistency.
  • New lockfile abstraction (LockfileBase) ensuring modular lockfile parsing.
  • Refactored fetcher logic to prevent package-manager-specific dependencies in shared code.

---

🔹 How will you know you've accomplished your goal?

• ✅ The new namespace structure is applied consistently across all relevant files.
• ✅ No direct references to Bun in shared fetcher or lockfile parsers.
• ✅ All package managers use LockfileBase and FileFetcherBase abstractions.
• ✅ All tests and linters pass successfully.
• ✅ Codebase is more modular, making future package manager additions easier.

---

📌 Checklist

• I have run the complete test suite to ensure all tests and linters pass.
• I have thoroughly tested my code changes to ensure they work as expected, including adding additional tests for new functionality.
• I have written clear and descriptive commit messages.
• I have provided a detailed description of the changes in the pull request, including the problem it addresses, how it fixes the problem, and any relevant details about the implementation.
• I have ensured that the code is well-documented and easy to understand.

[markhallen]

On this branch I successfully ran:

./bin/dry-run.rb bun dsp-testing/dependabot-bun-public --updater-options=enable_bun_ecosystem --enable-beta-ecosystems.

Dry run output

   => bump @types/bun from 1.1.16 to 1.2.2

  ± bun.lock
  ~~~
  --- /tmp/original20250210-12-kmksv  2025-02-10 09:45:04.460574665 +0000
  +++ /tmp/updated20250210-12-txu0ho  2025-02-10 09:45:04.460574665 +0000
  @@ -6,7 +6,7 @@
         "dependencies": {
           "bun-types": "^1.2.0",
           "express": "^4.21.2",
  -        "lodash": "4.17.20",
  +        "lodash": "^4.17.21",
         },
         "devDependencies": {
           "@types/bun": "latest",
  @@ -17,7 +17,7 @@
       },
     },
     "packages": {
  -    "@types/bun": ["@types/[email protected]", "", { "dependencies": { "bun-types": "1.1.43" } }, "sha512-E+ue6NMcn4FXC5bDRE1W/BXUVs01h5Mt02qH8/8HGCox9akuh8KNOFdwvaQS9TDgT2RmUyJYFRRqA60WtTnm2g=="],
  +    "@types/bun": ["@types/[email protected]", "", { "dependencies": { "bun-types": "1.2.2" } }, "sha512-tr74gdku+AEDN5ergNiBnplr7hpDp3V1h7fqI2GcR/rsUaM39jpSeKH0TFibRvU0KwniRx5POgaYnaXbk0hU+w=="],
   
       "@types/node": ["@types/[email protected]", "", { "dependencies": { "undici-types": "~5.26.4" } }, "sha512-scnD59RpYD91xngrQQLGkE+6UrHUPzeKZWhhjBSa3HSkwjbQc38+q3RoIVEwxQGRw3M+j5hpNAM+lgV3cVormg=="],
   
  @@ -95,7 +95,7 @@
   
       "ipaddr.js": ["[email protected]", "", {}, "sha512-0KI/607xoxSToH7GjN1FfSbLoU0+btTicjsQSWQlh/hZykN8KpmMf7uYwPW3R+akZ6R/w18ZlXSHBYXiYUPO3g=="],
   
  -    "lodash": ["[email protected]", "", {}, "sha512-PlhdFcillOINfeV7Ni6oF1TAEayyZBoZ8bcshTHqOYJYlrqzRK5hagpagky5o4HfCzzd1TRkXPMFq6cKk9rGmA=="],
  +    "lodash": ["[email protected]", "", {}, "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg=="],
   
       "math-intrinsics": ["[email protected]", "", {}, "sha512-/IXtbwEk5HTPyEwyKX6hGkYXxM9nbj64B+ilVJnC/R6B0pH5G4V3b0pVbL7DBj4tkhBAppbQUlf6F6Xl9LHu1g=="],
   
  @@ -165,7 +165,7 @@
   
       "vary": ["[email protected]", "", {}, "sha512-BNGbWLfd0eUPabhkXUVm0j8uuvREyTh5ovRa/dyow/BqAbZJyC+5fU+IzQOzmAKzYqYRAISoRhdQr3eIZ/PXqg=="],
   
  -    "@types/bun/bun-types": ["[email protected]", "", { "dependencies": { "@types/node": "~20.12.8", "@types/ws": "~8.5.10" } }, "sha512-W0wCtVH+bwFp7p3Zgs03CqxEDmXxEvmmUM/FBKgWIv9T8gyeotvIjIbHzuDScc2DphhRNtr7hJLCR5PspYL5qw=="],
  +    "@types/bun/bun-types": ["[email protected]", "", { "dependencies": { "@types/node": "*", "@types/ws": "~8.5.10" } }, "sha512-RCbMH5elr9gjgDGDhkTTugA21XtJAy/9jkKe/G3WR2q17VPGhcquf9Sir6uay9iW+7P/BV0CAHA1XlHXMAVKHg=="],
   
       "send/encodeurl": ["[email protected]", "", {}, "sha512-TPJXq8JqFaVYm2CWmPvnP2Iyo4ZSM7/QKcSmuMLDObfpH5fi7RUGmd/rTDf+rut/saiDiQEeVTNgAmJEdAOx0w=="],
   
  ~~~
  5 insertions (+), 5 deletions (-)
🌍 Total requests made: '17'
  ```
  
</details>