chore: rename internal variable to main

[Planeshifter]

Description

What is the purpose of this pull request?

This pull request:

• Renames the internal lib/index.js binding from a per-package name to main in four @stdlib/datasets packages, normalizing them to the canonical stdlib lib/index.js shape.

Namespace summary

• Namespace: @stdlib/datasets (57 packages, none autogenerated)
• Features analyzed (structural): file tree, package.json shape (top-level keys, scripts, stdlib), datapackage.json shape, README.md ##/### heading set and ordering, presence of canonical files (bin/cli, etc/cli_opts.json, test/test.js, test/test.cli.js, test/test.main.js, test/test.browser.js, benchmark/benchmark.js, benchmark/benchmark.browser.js, examples/index.js, docs/types/index.d.ts, docs/types/test.ts, docs/repl.txt, lib/index.js, lib/main.js, lib/browser.js, LICENSE), lib/index.js redacted code shape.
• Features analyzed (semantic): public signature, @returns JSDoc type, @throws JSDoc type/count, @example presence, lib/main.js require(...) set, error-construction style (format vs concatenation vs template-literal vs plain), validation prologue, lib/index.js redacted code shape and binding name.
• Features with clear majority (≥75%): full top-level package.json key set (57/57), full datapackage.json key set (57/57), canonical file presence (57/57 except lib/browser.js/benchmark/benchmark.browser.js/test/test.browser.js/test/test.main.js at 56/57), lib/index.js redacted code shape with binding main (53/57), lib/main.js redacted code shape (52/57 static-loader form), arity-0 public signature (54/57), single @throws {Error} (55/57), @example presence (57/57).
• Features without clear majority (excluded): @returns type (content-driven; StringArray, ObjectArray, Buffer, Object, ArrayArray, NumberArray, etc.), lib/main.js exported function name (content-driven; dataset, stopwords, words, table, names, data, etc.), README.md ## ordering (content-driven on References/See Also/Notes presence), keyword set beyond the universal four (stdlib, datasets, dataset, data).
• Drift surfaced for fix: lib/index.js binding name. 53/57 (93%) within @stdlib/datasets and 4625/5028 (92%) stdlib-wide use var main = require( './main.js' ); module.exports = main;. Four packages use a per-package binding instead.

@stdlib/datasets/afinn-111

Renames the internal variable in lib/index.js from afinn111 to main. The change aligns with the convention used in 4625/5028 (92%) of lib/index.js files across the stdlib codebase, including 53/57 (93%) of @stdlib/datasets/*/lib/index.js files. The exported value and public API are unchanged.

@stdlib/datasets/afinn-96

Renames the internal variable binding in lib/index.js from afinn96 to main. The change aligns with the convention used in 53/57 (93%) of @stdlib/datasets/*/lib/index.js files and 4625/5028 (92%) of stdlib lib/index.js files more broadly. The exported value and public API are unchanged.

@stdlib/datasets/minard-napoleons-march

Renames the internal variable in lib/index.js from minard to main to align with the convention used in 93% of @stdlib/datasets/*/lib/index.js files and 92% of stdlib lib/index.js files more broadly. The exported value and public API are unchanged.

@stdlib/datasets/month-names-en

Renames the internal variable in lib/index.js from months to main to match the convention used in 4625/5028 (92%) of stdlib lib/index.js files, including 53/57 (93%) of @stdlib/datasets/*/lib/index.js files. The exported value and public API are unchanged.

Related Issues

Does this pull request have any related issues?

No.

Questions

Any questions for reviewers of this pull request?

No.

Other

Any other information relevant to this pull request? This may include screenshots, references, and/or implementation notes.

Validation

• Structural extraction over all 57 @stdlib/datasets members covered the full file tree, package.json and datapackage.json key shapes, README.md ##/### heading set and ordering, canonical file presence, and lib/index.js/lib/main.js redacted code shapes (string and JSDoc redaction; whitespace-collapsed).
• Semantic extraction covered public signature and arity, JSDoc tag set (@param, @returns, @throws, @example), require() set, and error-construction style.
• Three-agent drift validation was run on the surfaced outliers: an opus semantic-review agent confirmed the local binding has no observable effect on the public API; an opus cross-reference agent confirmed no test, example, benchmark, REPL fixture, TypeScript declaration, or bin/cli outside lib/index.js reaches into the file's local variable name; a sonnet structural-review agent confirmed var main = require( './main.js' ); is the canonical stdlib lib/index.js shape (sampled math/base/special/sin, math/base/special/cos, string/replace, array/float64, utils/copy).
• Stdlib-wide presence check (≥90% gate): 4625/5028 (92.0%) of stdlib lib/index.js files use the var main = require( './main.js' ) form, comfortably above the 90% threshold for treating absence as drift.
• Open-PR collision check: GitHub search for open PRs touching datasets/afinn-111, datasets/afinn-96, datasets/minard-napoleons-march, or datasets/month-names-en returned zero hits; recent merged PRs touching @stdlib/datasets (chore: propagate fixes to sibling packages #11892, fix: add missing suffix wrappers #11904) reference vendored data files only.
• Precedent: directly mirrors b72a90bca (chore: rename internal variable to mainin twostring packages).

Deliberately excluded

• @stdlib/datasets/sotu — the only structural outlier on lib/browser.js, benchmark/benchmark.browser.js, test/test.browser.js, and test/test.main.js (56/57 each). The deviation is intentional: sotu is a query library (browser_db.js, browser_file_list.js, browser_get_file.js, db.js, file_list.js, get_file.js, index_year.js, index_name.js, index_party.js, union.js, validate.js) with a richer browser surface and per-component tests, not a static data export.
• @stdlib/datasets/cmudict, @stdlib/datasets/minard-napoleons-march, @stdlib/datasets/sotu options-bearing public signatures (arity 1 vs. namespace-majority arity 0). The arity, validation prologue, and format-based error construction in these three packages reflect documented optional data/query semantics, not drift.
• README.md heading order, @returns type, lib/main.js exported function name, and per-dataset keywords — content-driven. No clear majority above the 75% threshold; excluded from drift analysis.
• Auto-populated sections (## See Also, repl.txt, <package>.d.ts, generator-owned files) — out of scope per the routine.

Checklist

Please ensure the following tasks are completed before submitting this pull request.

• Read, understood, and followed the contributing guidelines.

AI Assistance

When authoring the changes proposed in this PR, did you use any kind of AI assistance?

• Yes
• No

If you answered "yes" above, how did you use AI assistance?

• Code generation (e.g., when writing an implementation or fixing a bug)
• Test/benchmark generation
• Documentation (including examples)
• Research and understanding

Disclosure

This PR was authored by Claude Code running an automated cross-package drift-detection routine: extracting structural and semantic features from every @stdlib/datasets member, computing the per-feature majority pattern at the 75% threshold, validating each surfaced outlier through three independent agents (opus semantic-review, opus cross-reference, sonnet structural-review), and applying only the corrections that survived all three verdicts plus the open-PR collision and ecosystem-presence gates. The four lib/index.js renames are mechanical (2 lines per file, local variable only, no public-API change). A maintainer should audit each site before promoting from draft.

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Generated by Claude Code

[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
datasets/afinn-111	$\color{green}146/146$ $\color{green}+100.00%$	$\color{green}7/7$ $\color{green}+100.00%$	$\color{green}2/2$ $\color{green}+100.00%$	$\color{green}146/146$ $\color{green}+100.00%$
datasets/afinn-96	$\color{green}146/146$ $\color{green}+100.00%$	$\color{green}7/7$ $\color{green}+100.00%$	$\color{green}2/2$ $\color{green}+100.00%$	$\color{green}146/146$ $\color{green}+100.00%$
datasets/minard-napoleons-march	$\color{green}346/346$ $\color{green}+100.00%$	$\color{green}34/34$ $\color{green}+100.00%$	$\color{green}3/3$ $\color{green}+100.00%$	$\color{green}346/346$ $\color{green}+100.00%$
datasets/month-names-en	$\color{green}146/146$ $\color{green}+100.00%$	$\color{green}7/7$ $\color{green}+100.00%$	$\color{green}2/2$ $\color{green}+100.00%$	$\color{green}146/146$ $\color{green}+100.00%$

The above coverage report was generated for the changes in this PR.