fix: add guard against invalid class initialization

Signed-off-by: Snehil Shah <[email protected]>

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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: na
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    status: na
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    status: passed
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  - task: lint_typescript_declarations
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  - task: lint_typescript_tests
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  - task: lint_license_headers
    status: passed
---

Author: Snehil-Shah

lib/node_modules/@stdlib/repl/lib/eager_evaluator.js

@@ -58,6 +58,10 @@ var tempDB = {
 * @returns {EagerEvaluator} eager-evaluator instance
 */
 function EagerEvaluator( repl, rli, enabled ) {
+	if ( !(this instanceof EagerEvaluator) ) {
+		return new EagerEvaluator( repl, rli, enabled );
+	}
+
 	// Cache a reference to the provided REPL instance:
 	this._repl = repl;