use dockers for tests, use npm workspaces, add rejson & redisearch modules, fix some bugs

packages/search/lib/commands/SPELLCHECK.ts

@@ -0,0 +1,57 @@
+interface SpellCheckTerms {
+    mode: 'INCLUDE' | 'EXCLUDE';
+    dictionary: string;
+}
+
+interface SpellCheckOptions {
+    DISTANCE?: number;
+    TERMS?: SpellCheckTerms | Array<SpellCheckTerms>;
+}
+
+export function transformArguments(index: string, query: string, options?: SpellCheckOptions): Array<string> {
+    const args = ['FT.SPELLCHECK', index, query];
+
+    if (options?.DISTANCE) {
+        args.push('DISTANCE', options.DISTANCE.toString());
+    }
+
+    if (options?.TERMS) {
+        if (Array.isArray(options.TERMS)) {
+            for (const term of options.TERMS) {
+                pushTerms(args, term);
+            }
+        } else {
+            pushTerms(args, options.TERMS);
+        }
+    }
+
+    return args;
+}
+
+function pushTerms(args: Array<string>, { mode, dictionary }: SpellCheckTerms): void {
+    args.push('TERMS', mode, dictionary);
+}
+
+type SpellCheckRawReply = Array<[
+    _: string,
+    term: string,
+    suggestions: Array<[score: string, suggestion: string]>
+]>;
+
+type SpellCheckReply = Array<{
+    term: string,
+    suggestions: Array<{
+        score: number,
+        suggestion: string
+    }>
+}>;
+
+export function transformReply(rawReply: SpellCheckRawReply): SpellCheckReply {
+    return rawReply.map(([, term, suggestions]) => ({
+        term,
+        suggestions: suggestions.map(([score, suggestion]) => ({
+            score: Number(score),
+            suggestion
+        }))
+    }));
+}