Drop Document method listNonDefaultTags()

BREAKING CHANGE: The public method is no longer available, as its
internal use for it is being refactored to StreamDirectives. An
alternative pattern will need to be documented for any current users,
once the visitor API is available to use as a base for it. (#190)

docs/04_documents.md

@@ -102,7 +102,6 @@ During stringification, a document with a true-ish `version` value will include
 | ------------------------------------------ | ---------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
 | createNode(value, options?)           | `Node`     | Recursively wrap any input with appropriate `Node` containers. See [Creating Nodes](#creating-nodes) for more information.                                                                     |
 | createPair(key, value, options?) | `Pair`     | Recursively wrap `key` and `value` into a `Pair` object. See [Creating Nodes](#creating-nodes) for more information.                                                                           |
-| listNonDefaultTags()                       | `string[]` | List the tags used in the document that are not in the default `tag:yaml.org,2002:` namespace.                                                                                                 |
 | parse(cst)                                 | `Document` | Parse a CST into this document. Mostly an internal method, modifying the document according to the contents of the parsed `cst`. Calling this multiple times on a Document is not recommended. |
 | setSchema(id?, customTags?)                | `void`     | Set the schema used by the document. `id` may either be a YAML version, or the identifier of a YAML 1.2 schema; if set, `customTags` should have the same shape as the similarly-named option. |
 | setTagPrefix(handle, prefix)               | `void`     | Set `handle` as a shorthand string for the `prefix` tag namespace.                                                                                                                             |

index.d.ts

@@ -283,11 +283,7 @@ export class Document extends Collection {
    *   `Scalar` objects.
    */
   createPair(key: any, value: any, options?: { wrapScalars?: boolean }): Pair
-  /**
-   * List the tags used in the document that are not in the default
-   * `tag:yaml.org,2002:` namespace.
-   */
-  listNonDefaultTags(): string[]
+
   /** Parse a CST into this document */
   parse(cst: CST.Document): this
   /**

src/doc/Document.d.ts

@@ -87,11 +87,7 @@ export class Document extends Collection {
    *   `Scalar` objects.
    */
   createPair(key: any, value: any, options?: { wrapScalars?: boolean }): Pair
-  /**
-   * List the tags used in the document that are not in the default
-   * `tag:yaml.org,2002:` namespace.
-   */
-  listNonDefaultTags(): string[]
+
   /** Parse a CST into this document */
   parse(cst: CST.Document): this
   /**

src/doc/Document.js

@@ -239,12 +239,6 @@ export class Document {
     return this
   }
 
-  listNonDefaultTags() {
-    return listTagNames(this.contents).filter(
-      t => t.indexOf(defaultTagPrefix) !== 0
-    )
-  }
-
   setTagPrefix(handle, prefix) {
     if (handle[0] !== '!' || handle[handle.length - 1] !== '!')
       throw new Error('Handle must start and end with !')
@@ -306,7 +300,9 @@ export class Document {
       lines.push(vd)
       hasDirectives = true
     }
-    const tagNames = this.listNonDefaultTags()
+    const tagNames = listTagNames(this.contents).filter(
+      t => t.indexOf(defaultTagPrefix) !== 0
+    )
     this.tagPrefixes.forEach(({ handle, prefix }) => {
       if (tagNames.some(t => t.indexOf(prefix) === 0)) {
         lines.push(`%TAG ${handle} ${prefix}`)