Replace YAML parser

common/syscalls/yaml.ts

@@ -1,15 +1,48 @@
 import { SysCallMapping } from "../../plugos/system.ts";
 import { YAML } from "../../web/deps.ts";
 
+type YamlStringifyOptions = {
+  /** indentation width to use (in spaces). */
+  indent?: number;
+  /** when true, will not add an indentation level to array elements */
+  noArrayIndent?: boolean;
+  /** do not throw on invalid types (like function in the safe schema) and skip pairs and single values with such types. */
+  skipInvalid?: boolean;
+  /** specifies level of nesting, when to switch from block to flow style for collections. -1 means block style everwhere */
+  flowLevel?: number;
+  /** if true, sort keys when dumping YAML. If a function, use the function to sort the keys. (default: false) */
+  sortKeys?: boolean;
+  /** set max line width. (default: 80) */
+  lineWidth?: number;
+  /** if true, don't convert duplicate objects into references (default: false) */
+  noRefs?: boolean;
+  /** if true don't try to be compatible with older yaml versions. Currently: don't quote "yes", "no" and so on, as required for YAML 1.1 (default: false) */
+  noCompatMode?: boolean;
+  /**
+   * if true flow sequences will be condensed, omitting the space between `key: value` or `a, b`. Eg. `'[a,b]'` or `{a:{b:c}}`.
+   * Can be useful when using yaml for pretty URL query params as spaces are %-encoded. (default: false).
+   */
+  condenseFlow?: boolean;
+  /** strings will be quoted using this quoting style. If you specify single quotes, double quotes will still be used for non-printable characters. (default: `'`) */
+  quotingType?: "'" | '"';
+  /** if true, all non-key strings will be quoted even if they normally don't need to. (default: false) */
+  forceQuotes?: boolean;
+};
+
 export function yamlSyscalls(): SysCallMapping {
   return {
     "yaml.parse": (_ctx, text: string): any => {
-      return YAML.parse(text);
+      return YAML.load(text);
     },
-    "yaml.stringify": (_ctx, obj: any): string => {
-      return YAML.stringify(obj, {
-        noArrayIndent: true,
+    "yaml.stringify": (
+      _ctx,
+      obj: any,
+      options: YamlStringifyOptions = {},
+    ): string => {
+      return YAML.dump(obj, {
+        quotingType: '"',
         noCompatMode: true,
+        ...options,
       });
     },
   };