main repo

node_modules/date-fns/parse/_lib/parsers/DateParser.mjs

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+import { numericPatterns } from "../constants.mjs";
+import { Parser } from "../Parser.mjs";
+import {
+  isLeapYearIndex,
+  parseNDigits,
+  parseNumericPattern,
+} from "../utils.mjs";
+
+const DAYS_IN_MONTH = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
+const DAYS_IN_MONTH_LEAP_YEAR = [
+  31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31,
+];
+
+// Day of the month
+export class DateParser extends Parser {
+  priority = 90;
+  subPriority = 1;
+
+  parse(dateString, token, match) {
+    switch (token) {
+      case "d":
+        return parseNumericPattern(numericPatterns.date, dateString);
+      case "do":
+        return match.ordinalNumber(dateString, { unit: "date" });
+      default:
+        return parseNDigits(token.length, dateString);
+    }
+  }
+
+  validate(date, value) {
+    const year = date.getFullYear();
+    const isLeapYear = isLeapYearIndex(year);
+    const month = date.getMonth();
+    if (isLeapYear) {
+      return value >= 1 && value <= DAYS_IN_MONTH_LEAP_YEAR[month];
+    } else {
+      return value >= 1 && value <= DAYS_IN_MONTH[month];
+    }
+  }
+
+  set(date, _flags, value) {
+    date.setDate(value);
+    date.setHours(0, 0, 0, 0);
+    return date;
+  }
+
+  incompatibleTokens = [
+    "Y",
+    "R",
+    "q",
+    "Q",
+    "w",
+    "I",
+    "D",
+    "i",
+    "e",
+    "c",
+    "t",
+    "T",
+  ];
+}