Remove internalSubset support.

It seems unsupported in any modern browser, and absent from current DOM specs.
6 years ago · 5ca0aa61c9
--- a/index.js
+++ b/index.js
@@ -7,7 +7,6 @@ export default function doctypeToString(doctype) {
        + (doctype.systemId
            ? (doctype.publicId ? `` : ` SYSTEM`) + ` "${doctype.systemId}"`
            : ``)
        + (doctype.internalSubset ? ` [${doctype.internalSubset}]` : ``)
        + `>`
    return doctypeString
 }
--- a/index.test.js
+++ b/index.test.js
@@ -36,13 +36,3 @@ test('should work for a doctype without public id', t => {
    const doc = makeStubDocument(doctype)
    t.is(doctypeToString(doc.doctype), doctype)
 })

 // Cannot test, as modern parsers do not to support internal declarations.
 // test('should work for a doctype with internal declarations', t => {
 //     const doctype = `<!DOCTYPE html SYSTEM "example.dtd" [
 //       <!ENTITY foo "foo">
 //       <!ENTITY bar "bar">
 //     ]>`
 //     const doc = makeStubDocument(doctype)
 //     t.is(doctypeToString(doc.doctype), doctype)
 // })