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node_modules/@popperjs/core/lib/createPopper.js

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+import getCompositeRect from "./dom-utils/getCompositeRect.js";
+import getLayoutRect from "./dom-utils/getLayoutRect.js";
+import listScrollParents from "./dom-utils/listScrollParents.js";
+import getOffsetParent from "./dom-utils/getOffsetParent.js";
+import orderModifiers from "./utils/orderModifiers.js";
+import debounce from "./utils/debounce.js";
+import mergeByName from "./utils/mergeByName.js";
+import detectOverflow from "./utils/detectOverflow.js";
+import { isElement } from "./dom-utils/instanceOf.js";
+var DEFAULT_OPTIONS = {
+  placement: 'bottom',
+  modifiers: [],
+  strategy: 'absolute'
+};
+
+function areValidElements() {
+  for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
+    args[_key] = arguments[_key];
+  }
+
+  return !args.some(function (element) {
+    return !(element && typeof element.getBoundingClientRect === 'function');
+  });
+}
+
+export function popperGenerator(generatorOptions) {
+  if (generatorOptions === void 0) {
+    generatorOptions = {};
+  }
+
+  var _generatorOptions = generatorOptions,
+      _generatorOptions$def = _generatorOptions.defaultModifiers,
+      defaultModifiers = _generatorOptions$def === void 0 ? [] : _generatorOptions$def,
+      _generatorOptions$def2 = _generatorOptions.defaultOptions,
+      defaultOptions = _generatorOptions$def2 === void 0 ? DEFAULT_OPTIONS : _generatorOptions$def2;
+  return function createPopper(reference, popper, options) {
+    if (options === void 0) {
+      options = defaultOptions;
+    }
+
+    var state = {
+      placement: 'bottom',
+      orderedModifiers: [],
+      options: Object.assign({}, DEFAULT_OPTIONS, defaultOptions),
+      modifiersData: {},
+      elements: {
+        reference: reference,
+        popper: popper
+      },
+      attributes: {},
+      styles: {}
+    };
+    var effectCleanupFns = [];
+    var isDestroyed = false;
+    var instance = {
+      state: state,
+      setOptions: function setOptions(setOptionsAction) {
+        var options = typeof setOptionsAction === 'function' ? setOptionsAction(state.options) : setOptionsAction;
+        cleanupModifierEffects();
+        state.options = Object.assign({}, defaultOptions, state.options, options);
+        state.scrollParents = {
+          reference: isElement(reference) ? listScrollParents(reference) : reference.contextElement ? listScrollParents(reference.contextElement) : [],
+          popper: listScrollParents(popper)
+        }; // Orders the modifiers based on their dependencies and `phase`
+        // properties
+
+        var orderedModifiers = orderModifiers(mergeByName([].concat(defaultModifiers, state.options.modifiers))); // Strip out disabled modifiers
+
+        state.orderedModifiers = orderedModifiers.filter(function (m) {
+          return m.enabled;
+        });
+        runModifierEffects();
+        return instance.update();
+      },
+      // Sync update – it will always be executed, even if not necessary. This
+      // is useful for low frequency updates where sync behavior simplifies the
+      // logic.
+      // For high frequency updates (e.g. `resize` and `scroll` events), always
+      // prefer the async Popper#update method
+      forceUpdate: function forceUpdate() {
+        if (isDestroyed) {
+          return;
+        }
+
+        var _state$elements = state.elements,
+            reference = _state$elements.reference,
+            popper = _state$elements.popper; // Don't proceed if `reference` or `popper` are not valid elements
+        // anymore
+
+        if (!areValidElements(reference, popper)) {
+          return;
+        } // Store the reference and popper rects to be read by modifiers
+
+
+        state.rects = {
+          reference: getCompositeRect(reference, getOffsetParent(popper), state.options.strategy === 'fixed'),
+          popper: getLayoutRect(popper)
+        }; // Modifiers have the ability to reset the current update cycle. The
+        // most common use case for this is the `flip` modifier changing the
+        // placement, which then needs to re-run all the modifiers, because the
+        // logic was previously ran for the previous placement and is therefore
+        // stale/incorrect
+
+        state.reset = false;
+        state.placement = state.options.placement; // On each update cycle, the `modifiersData` property for each modifier
+        // is filled with the initial data specified by the modifier. This means
+        // it doesn't persist and is fresh on each update.
+        // To ensure persistent data, use `${name}#persistent`
+
+        state.orderedModifiers.forEach(function (modifier) {
+          return state.modifiersData[modifier.name] = Object.assign({}, modifier.data);
+        });
+
+        for (var index = 0; index < state.orderedModifiers.length; index++) {
+          if (state.reset === true) {
+            state.reset = false;
+            index = -1;
+            continue;
+          }
+
+          var _state$orderedModifie = state.orderedModifiers[index],
+              fn = _state$orderedModifie.fn,
+              _state$orderedModifie2 = _state$orderedModifie.options,
+              _options = _state$orderedModifie2 === void 0 ? {} : _state$orderedModifie2,
+              name = _state$orderedModifie.name;
+
+          if (typeof fn === 'function') {
+            state = fn({
+              state: state,
+              options: _options,
+              name: name,
+              instance: instance
+            }) || state;
+          }
+        }
+      },
+      // Async and optimistically optimized update – it will not be executed if
+      // not necessary (debounced to run at most once-per-tick)
+      update: debounce(function () {
+        return new Promise(function (resolve) {
+          instance.forceUpdate();
+          resolve(state);
+        });
+      }),
+      destroy: function destroy() {
+        cleanupModifierEffects();
+        isDestroyed = true;
+      }
+    };
+
+    if (!areValidElements(reference, popper)) {
+      return instance;
+    }
+
+    instance.setOptions(options).then(function (state) {
+      if (!isDestroyed && options.onFirstUpdate) {
+        options.onFirstUpdate(state);
+      }
+    }); // Modifiers have the ability to execute arbitrary code before the first
+    // update cycle runs. They will be executed in the same order as the update
+    // cycle. This is useful when a modifier adds some persistent data that
+    // other modifiers need to use, but the modifier is run after the dependent
+    // one.
+
+    function runModifierEffects() {
+      state.orderedModifiers.forEach(function (_ref) {
+        var name = _ref.name,
+            _ref$options = _ref.options,
+            options = _ref$options === void 0 ? {} : _ref$options,
+            effect = _ref.effect;
+
+        if (typeof effect === 'function') {
+          var cleanupFn = effect({
+            state: state,
+            name: name,
+            instance: instance,
+            options: options
+          });
+
+          var noopFn = function noopFn() {};
+
+          effectCleanupFns.push(cleanupFn || noopFn);
+        }
+      });
+    }
+
+    function cleanupModifierEffects() {
+      effectCleanupFns.forEach(function (fn) {
+        return fn();
+      });
+      effectCleanupFns = [];
+    }
+
+    return instance;
+  };
+}
+export var createPopper = /*#__PURE__*/popperGenerator(); // eslint-disable-next-line import/no-unused-modules
+
+export { detectOverflow };