feat: [Reader] nilable file support

Signed-off-by: Lexus Drumgold <[email protected]>
flex-development · Jun 22, 2024 · 1a8faa0 · 1a8faa0
1 parent c4f6fc4
commit 1a8faa0
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diff --git a/README.md b/README.md
@@ -172,7 +172,7 @@ relative to the given point.
 
 **Note**: This is an abstract class and must be extended.
 
-- `file` ([`Value`][vfile-value] | [`VFile`][vfile-api]) &mdash; file to read
+- `file` ([`Value`][vfile-value] | [`VFile`][vfile-api] | `null` | `undefined`) &mdash; file to read
 - `start` ([`Point`][point] | `null` | `undefined`) &mdash; point before first reader value
 
 #### <small>Type Parameters</small>

diff --git a/src/abstract.reader.ts b/src/abstract.reader.ts
@@ -76,11 +76,11 @@ abstract class Reader<
    * @see {@linkcode VFile}
    * @see {@linkcode Value}
    *
-   * @param {Value | VFile} file - File to read
+   * @param {(Value | VFile | null)?} file - File to read
    * @param {(Point | null)?} [start] - Point before first reader value
    */
-  constructor(file: Value | VFile, start?: Point | null) {
-    super(file, start)
+  constructor(file?: Value | VFile | null, start?: Point | null) {
+    super(file ??= '', start)
 
     this.#position = null
     this.source = String(file)