Commit

node_modules/mongodb/lib/sort.js

@@ -0,0 +1,103 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.formatSort = formatSort;
+const error_1 = require("./error");
+/** @internal */
+function prepareDirection(direction = 1) {
+    const value = `${direction}`.toLowerCase();
+    if (isMeta(direction))
+        return direction;
+    switch (value) {
+        case 'ascending':
+        case 'asc':
+        case '1':
+            return 1;
+        case 'descending':
+        case 'desc':
+        case '-1':
+            return -1;
+        default:
+            throw new error_1.MongoInvalidArgumentError(`Invalid sort direction: ${JSON.stringify(direction)}`);
+    }
+}
+/** @internal */
+function isMeta(t) {
+    return typeof t === 'object' && t != null && '$meta' in t && typeof t.$meta === 'string';
+}
+/** @internal */
+function isPair(t) {
+    if (Array.isArray(t) && t.length === 2) {
+        try {
+            prepareDirection(t[1]);
+            return true;
+        }
+        catch {
+            return false;
+        }
+    }
+    return false;
+}
+function isDeep(t) {
+    return Array.isArray(t) && Array.isArray(t[0]);
+}
+function isMap(t) {
+    return t instanceof Map && t.size > 0;
+}
+function isReadonlyArray(value) {
+    return Array.isArray(value);
+}
+/** @internal */
+function pairToMap(v) {
+    return new Map([[`${v[0]}`, prepareDirection([v[1]])]]);
+}
+/** @internal */
+function deepToMap(t) {
+    const sortEntries = t.map(([k, v]) => [`${k}`, prepareDirection(v)]);
+    return new Map(sortEntries);
+}
+/** @internal */
+function stringsToMap(t) {
+    const sortEntries = t.map(key => [`${key}`, 1]);
+    return new Map(sortEntries);
+}
+/** @internal */
+function objectToMap(t) {
+    const sortEntries = Object.entries(t).map(([k, v]) => [
+        `${k}`,
+        prepareDirection(v)
+    ]);
+    return new Map(sortEntries);
+}
+/** @internal */
+function mapToMap(t) {
+    const sortEntries = Array.from(t).map(([k, v]) => [
+        `${k}`,
+        prepareDirection(v)
+    ]);
+    return new Map(sortEntries);
+}
+/** converts a Sort type into a type that is valid for the server (SortForCmd) */
+function formatSort(sort, direction) {
+    if (sort == null)
+        return undefined;
+    if (typeof sort === 'string')
+        return new Map([[sort, prepareDirection(direction)]]); // 'fieldName'
+    if (typeof sort !== 'object') {
+        throw new error_1.MongoInvalidArgumentError(`Invalid sort format: ${JSON.stringify(sort)} Sort must be a valid object`);
+    }
+    if (!isReadonlyArray(sort)) {
+        if (isMap(sort))
+            return mapToMap(sort); // Map<fieldName, SortDirection>
+        if (Object.keys(sort).length)
+            return objectToMap(sort); // { [fieldName: string]: SortDirection }
+        return undefined;
+    }
+    if (!sort.length)
+        return undefined;
+    if (isDeep(sort))
+        return deepToMap(sort); // [ [fieldName, sortDir], [fieldName, sortDir] ... ]
+    if (isPair(sort))
+        return pairToMap(sort); // [ fieldName, sortDir ]
+    return stringsToMap(sort); // [ fieldName, fieldName ]
+}
+//# sourceMappingURL=sort.js.map