refactor: rename internal variables

[Planeshifter]

Description

What is the purpose of this pull request?

This pull request:

• Renames the lib/index.js import binding in stats/base/dists/chisquare/mean, stats/base/dists/chisquare/median, and stats/base/dists/chisquare/mode from the function name to the conventional main identifier, aligning the three packages with the majority convention in the namespace.

Namespace summary

• Namespace: @stdlib/stats/base/dists/chisquare
• Members analyzed: 14 (cdf, ctor, entropy, kurtosis, logpdf, mean, median, mgf, mode, pdf, quantile, skewness, stdev, variance)
• Features with a clear ≥75% majority: package.json top-level key set (100%), lib/main.js presence (100%), lib/index.js import binding name (main, 78%), README.md presence (100%), examples/index.js presence (100%), benchmark/benchmark.js presence (100%).
• Features without a clear majority (excluded from drift analysis): native-addon files (binding.gyp, manifest.json, lib/native.js, src/main.c, src/addon.c, test/test.native.js) at 71%; factory-pattern files (lib/factory.js, test/test.factory.js) at 36%; ## C APIs README section at 71%. All track the package's mathematical/native-port status and are intentional rather than drift.

Per outlier package

stats/base/dists/chisquare/mean

Rebinds the require( './main.js' ) import from mean to main in lib/index.js. Eleven of the fourteen sibling packages in the namespace already use the main identifier (78%); ecosystem-wide, 401 of 505 stats/base/dists/**/lib/index.js files do (79%). Internal-only rename; the public export and the entry-point identity are unchanged.

stats/base/dists/chisquare/median

Same rebind in median/lib/index.js. Tests require( './../lib' ) and rebind the export to a local median symbol, so the internal identifier is invisible to consumers.

stats/base/dists/chisquare/mode

Same rebind in mode/lib/index.js. Smoke-tested: mode(9) → 7, mode(-1) → NaN, mode(NaN) → NaN.

Validation

• Structural feature extraction across all 14 packages (file tree, package.json/manifest.json shape, README headings, test/benchmark/example file naming).
• Semantic feature inspection (signatures, validation prologues, error construction, JSDoc shape) on lib/main.js and lib/index.js per package.
• Confirmed mean/median/mode tests import via require( './../lib' ) and do not depend on the internal binding name.
• Confirmed the public CommonJS export is unchanged (module.exports still resolves to the same function object).
• Cross-checked the convention ecosystem-wide: 79% of stats/base/dists packages already use var main = require( './main.js' );.
• Deliberately excluded: native-addon presence (intentional, tracks per-package C-port progress; an open PR — feat: add C implementation for stats/base/dists/chisquare/pdf #11634 — adds C for pdf); factory-pattern files (intentional, only function-generators have them); JSDoc k typing as PositiveNumber vs NonNegativeNumber (reflects whether k = 0 is mathematically defined for the function).

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.

Diff is 6 lines across 3 files (2 lines per package). Each correction is committed separately for a per-package audit trail.

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 over the stats/base/dists/chisquare namespace. Author reviewed the diff before opening.

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@stdlib-js/reviewers

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Generated by Claude Code

[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
stats/base/dists/chisquare/mean	$\\color{green}161/161$ $\\color{green}+100.00\\%$	$\\color{green}8/8$ $\\color{green}+100.00\\%$	$\\color{green}2/2$ $\\color{green}+100.00\\%$	$\\color{green}161/161$ $\\color{green}+100.00\\%$
stats/base/dists/chisquare/median	$\\color{green}100/100$ $\\color{green}+100.00\\%$	$\\color{green}3/3$ $\\color{green}+100.00\\%$	$\\color{green}1/1$ $\\color{green}+100.00\\%$	$\\color{green}100/100$ $\\color{green}+100.00\\%$
stats/base/dists/chisquare/mode	$\\color{green}162/162$ $\\color{green}+100.00\\%$	$\\color{green}8/8$ $\\color{green}+100.00\\%$	$\\color{green}2/2$ $\\color{green}+100.00\\%$	$\\color{green}162/162$ $\\color{green}+100.00\\%$

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