completely remove parameter only needed for error messages

Author: neverRare

src/parser/composer.ts

@@ -90,16 +90,16 @@ export function phrase(value: Phrase): string {
       return preposition(value);
   }
 }
-function particle(type: "and" | "anu", particle: null | string) {
+function particle(type: "and" | "anu", particle: string) {
   if (type === "and") {
-    return particle!;
+    return particle;
   } else {
     return "anu;";
   }
 }
 export function multiplePhrases(
   phrases: MultiplePhrases,
-  andParticle: null | string,
+  andParticle: string,
 ): string {
   switch (phrases.type) {
     case "simple":

src/translator/phrase.ts

@@ -427,7 +427,7 @@ export function multiplePhrases(
     phrases: TokiPona.MultiplePhrases;
     place: Place;
     includeGerund: boolean;
-    andParticle: null | string;
+    andParticle: string;
   }>,
 ): IterableResult<PhraseTranslation> {
   const { phrases, andParticle } = options;

src/translator/preposition.ts

@@ -30,7 +30,7 @@ export function preposition(
       phrases: preposition.phrases,
       place: "object",
       includeGerund: true,
-      andParticle: null,
+      andParticle: preposition.preposition.word,
     })
       .map((phrases) =>
         phrases.type === "noun"

src/translator2/phrase.ts

@@ -381,12 +381,8 @@ export function phraseAsVerb(
 }
 
 export function multiplePhrases(
-  options: Readonly<{
-    phrases: TokiPona.MultiplePhrases;
-    andParticle: null | string;
-  }>,
+  phrases: TokiPona.MultiplePhrases,
 ): IterableResult<PhraseTranslation> {
-  const { phrases, andParticle } = options;
   switch (phrases.type) {
     case "simple":
       return phrase(phrases.phrase);
@@ -395,7 +391,7 @@ export function multiplePhrases(
       const conjunction = CONJUNCTION[phrases.type];
       return IterableResult.combine(
         ...phrases.phrases
-          .map((phrases) => multiplePhrases({ ...options, phrases })),
+          .map((phrases) => multiplePhrases(phrases)),
       )
         .filterMap((phrase): null | PhraseTranslation => {
           if (
@@ -458,7 +454,7 @@ export function multiplePhrases(
           }
         })
         .addErrorWhenNone(() =>
-          new ExhaustedError(Composer.multiplePhrases(phrases, andParticle))
+          new ExhaustedError(Composer.multiplePhrases(phrases, "(and)"))
         );
     }
   }

src/translator2/preposition.ts

@@ -31,10 +31,7 @@ export function preposition(
             ))
           : throwError(new FilteredError("adjectives modifying preposition"))
       ),
-    multiplePhrases({
-      phrases: preposition.phrases,
-      andParticle: null,
-    })
+    multiplePhrases(preposition.phrases)
       .filterMap((phrases) =>
         phrases.type === "noun"
           ? adverbialIsNone(phrases.adverbialModifier) ? phrases.noun : null