[RFC]: add `@stdlib/assert/is-well-formed-string`

[kgryte]

Description

This RFC proposes adding support for asserting whether an input value is a well-formed string (i.e. does not contain lone surrogates).

Package: @stdlib/assert/is-well-formed-string Alias: isWellFormedString

Related Issues

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Questions

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Other

Resources:

• Lone surrogates: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String#utf-16_characters_unicode_code_points_and_grapheme_clusters
• isWellFormed: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/isWellFormed

Prior art in stdlib:

• @stdlib/assert/is-string
• @stdlib/assert/is-empty-string

Checklist

• [X] I have read and understood the Code of Conduct.
• [X] Searched for existing issues and pull requests.
• [X] The issue name begins with RFC:.