refactor: upgrade to MathJax v4 for equation rendering

---
type: pre_commit_static_analysis_report
description: Results of running static analysis checks when committing changes.
report:
  - task: lint_filenames
    status: passed
  - task: lint_editorconfig
    status: passed
  - task: lint_markdown
    status: passed
  - task: lint_package_json
    status: na
  - task: lint_repl_help
    status: na
  - task: lint_javascript_src
    status: passed
  - task: lint_javascript_cli
    status: passed
  - task: lint_javascript_examples
    status: na
  - task: lint_javascript_tests
    status: passed
  - task: lint_javascript_benchmarks
    status: na
  - task: lint_python
    status: na
  - task: lint_r
    status: na
  - task: lint_c_src
    status: na
  - task: lint_c_examples
    status: na
  - task: lint_c_benchmarks
    status: na
  - task: lint_c_tests_fixtures
    status: na
  - task: lint_shell
    status: na
  - task: lint_typescript_declarations
    status: na
  - task: lint_typescript_tests
    status: na
  - task: lint_license_headers
    status: passed
---

Author: kgryte

lib/node_modules/@stdlib/_tools/utils/tex-equation-to-svg/README.md

@@ -44,7 +44,7 @@ var tex2svg = require( '@stdlib/_tools/utils/tex-equation-to-svg' );
 
 #### tex2svg( str\[, options], clbk )
 
-Converts a [TeX][tex] or [LaTeX][latex] `string` to an SVG.
+Converts a [TeX][tex] or [LaTeX][latex] string to an SVG.
 
 ```javascript
 var eqn = 'y = mx + b';
@@ -62,14 +62,13 @@ function clbk( error, svg ) {
 }
 ```
 
-The function accepts the following `options`:
+The function accepts the following options:
 
 -   **width**: container width in `ex` (used for linebreaking and tags). Default: `100`.
 -   **ex**: `ex` size in pixels. Default: `6`.
--   **inline**: `boolean` indicating whether to format an input `string` as an inline equation. Default: `false`.
--   **linebreaks**: `boolean` indicating whether to perform linebreaking. Default: `true`.
+-   **inline**: boolean indicating whether to format an input string as an inline equation. Default: `false`.
 
-By default, the function formats an input `string` as a displayed equation. To format the `string` as a text (inline) equation, set the `inline` option to `true`.
+By default, the function formats an input string as a displayed equation. To format the string as a text (inline) equation, set the `inline` option to `true`.
 
 ```javascript
 var eqn = 'y = mx + b';
@@ -90,7 +89,7 @@ function clbk( error, svg ) {
 
 #### tex2svg.factory( options )
 
-Creates a reusable `function`.
+Creates a reusable function.
 
 ```javascript
 function clbk( error, svg ) {
@@ -112,7 +111,7 @@ convert( 'w = \\sum_{i=0}^{n} x_i', clbk );
 // ...
 ```
 
-The factory method accepts the same `options` as [`tex2svg()`](#tex2svg).
+The factory method accepts the same options as [`tex2svg()`](#tex2svg).
 
 </section>
 
@@ -144,6 +143,8 @@ The factory method accepts the same `options` as [`tex2svg()`](#tex2svg).
 
 ## Examples
 
+<!-- eslint-disable @cspell/spellchecker -->
+
 <!-- eslint no-undef: "error" -->
 
 ```javascript
@@ -186,9 +187,8 @@ Options:
   -h,  --help               Print this message.
   -V,  --version            Print the package version.
        --width width        Container width in ex. Default: 100.
-       --ex ex              ex size in pixels. Default: 6.
+       --ex ex              ex size in pixels. Default: 8.
        --inline             Format input equation as inline TeX.
-       --no-linebreaks      Disable linebreaking.
 ```
 
 </section>

lib/node_modules/@stdlib/_tools/utils/tex-equation-to-svg/bin/cli

@@ -69,9 +69,6 @@ function main() {
 	if ( flags.inline ) {
 		opts.inline = flags.inline;
 	}
-	if ( flags.linebreaks === false ) {
-		opts.linebreaks = false;
-	}
 	tex2svg( args[ 0 ], opts, clbk );
 
 	/**

lib/node_modules/@stdlib/_tools/utils/tex-equation-to-svg/docs/usage.txt

@@ -3,9 +3,8 @@ Usage: tex2svg [options] <equation>
 
 Options:
 
-  -h,  --help               Print this message.
-  -V,  --version            Print the package version.
-       --width width        Container width in ex. Default: 100.
-       --ex ex              ex size in pixels. Default: 6.
-       --inline             Format input equation as inline TeX.
-       --no-linebreaks      Disable linebreaking.
+  -h, --help               Print this message.
+  -V, --version            Print the package version.
+      --width width        Container width in ex. Default: 100.
+      --ex ex              ex size in pixels. Default: 8.
+      --inline             Format input equation as inline TeX.

lib/node_modules/@stdlib/_tools/utils/tex-equation-to-svg/etc/cli_opts.json

@@ -6,8 +6,7 @@
 	"boolean": [
 		"help",
 		"version",
-		"inline",
-		"no-linebreaks"
+		"inline"
 	],
 	"alias": {
 		"help": [

lib/node_modules/@stdlib/_tools/utils/tex-equation-to-svg/lib/defaults.js

@@ -0,0 +1,45 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*    http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MAIN //
+
+/**
+* Returns default options.
+*
+* @private
+* @returns {Object} default options
+*/
+function defaults() {
+	return {
+		'svg': {
+			'display': true,
+			'containerWidth': 100,
+			'em': 16,
+			'ex': 8,
+			'scale': 1
+		},
+		'stripAttributes': true
+	};
+}
+
+
+// EXPORTS //
+
+module.exports = defaults;

lib/node_modules/@stdlib/_tools/utils/tex-equation-to-svg/lib/defaults.json

@@ -20,13 +20,12 @@
 
 // MODULES //
 
-var mathjax = require( 'mathjax-node-sre' );
 var isFunction = require( '@stdlib/assert/is-function' );
 var isString = require( '@stdlib/assert/is-string' ).isPrimitive;
 var format = require( '@stdlib/string/format' );
-var copy = require( '@stdlib/utils/copy' );
-var defaults = require( './defaults.json' );
+var defaults = require( './defaults.js' );
 var validate = require( './validate.js' );
+var MathJax = require( './mathjax' );
 
 
 // MAIN //
@@ -38,7 +37,6 @@ var validate = require( './validate.js' );
 * @param {PositiveInteger} [options.width=100] - container width in `ex`
 * @param {PositiveInteger} [options.ex=6] - `ex` size in pixels
 * @param {boolean} [options.inline=false] - specifies whether to format the input string as an inline equation
-* @param {boolean} [options.linebreaks=true] - enable linebreaking
 * @throws {TypeError} options argument must be an object
 * @throws {TypeError} must provide valid options
 * @returns {Function} function to convert a string to an SVG
@@ -60,16 +58,24 @@ var validate = require( './validate.js' );
 * }
 */
 function factory( options ) {
+	var sopts;
 	var opts;
 	var err;
-	opts = copy( defaults );
-	err = validate( opts, options );
+
+	opts = defaults();
+
+	sopts = opts.svg;
+	err = validate( sopts, options );
 	if ( err ) {
 		throw err;
 	}
-	if ( opts.inline ) {
-		opts.format = 'inline-TeX';
-		delete opts.inline;
+	if ( sopts.inline ) {
+		sopts.display = false;
+		delete sopts.inline;
+	}
+	if ( sopts.width ) {
+		sopts.containerWidth = sopts.width;
+		delete sopts.width;
 	}
 	return tex2svg;
 
@@ -84,29 +90,15 @@ function factory( options ) {
 	* @returns {void}
 	*/
 	function tex2svg( str, clbk ) {
+		var mathjax;
 		if ( !isString( str ) ) {
 			throw new TypeError( format( 'invalid argument. First argument must be a string. Value: `%s`.', str ) );
 		}
 		if ( !isFunction( clbk ) ) {
 			throw new TypeError( format( 'invalid argument. Callback argument must be a function. Value: `%s`.', clbk ) );
 		}
-		opts.math = str;
-		mathjax.typeset( opts, done );
-		/**
-		* Callback invoked upon converting a string to SVG.
-		*
-		* @private
-		* @param {Object} data - output
-		* @returns {void}
-		*/
-		function done( data ) {
-			var err;
-			if ( data.errors ) {
-				err = new Error( data.errors[ 0 ] );
-				return clbk( err );
-			}
-			clbk( null, data.svg );
-		}
+		mathjax = new MathJax();
+		mathjax.tex2svg( str, sopts, clbk );
 	}
 }
 

lib/node_modules/@stdlib/_tools/utils/tex-equation-to-svg/lib/factory.js

@@ -33,7 +33,6 @@ var factory = require( './factory.js' );
 * @param {PositiveInteger} [options.width=100] - container width in `ex`
 * @param {PositiveInteger} [options.ex=6] - `ex` size in pixels
 * @param {boolean} [options.inline=false] - specifies whether to format the input string as an inline equation
-* @param {boolean} [options.linebreaks=true] - enable linebreaking
 * @param {Callback} clbk - callback to invoke once finished
 * @throws {TypeError} first argument must be a string
 * @throws {TypeError} options argument must be an object