improved granularity of prosemirror binding

lib/globals.js

@@ -58,8 +58,6 @@ export const until = (timeout, check) => createPromise((resolve, reject) => {
 
 export const error = description => new Error(description)
 
-export const max = (a, b) => a > b ? a : b
-
 /**
  * @param {number} t Time to wait
  * @return {Promise} Promise that is resolved after t ms

lib/math.js

@@ -2,3 +2,27 @@
  * @module math
  */
 export const floor = Math.floor
+
+/**
+ * @function
+ * @param {number} a
+ * @param {number} b
+ * @return {number} The sum of a and b
+ */
+export const add = (a, b) => a + b
+
+/**
+ * @function
+ * @param {number} a
+ * @param {number} b
+ * @return {number} The smaller element of a and b
+ */
+export const min = (a, b) => a < b ? a : b
+
+/**
+ * @function
+ * @param {number} a
+ * @param {number} b
+ * @return {number} The bigger element of a and b
+ */
+export const max = (a, b) => a > b ? a : b

lib/object.js

@@ -0,0 +1,14 @@
+
+export const create = Object.create(null)
+
+export const keys = Object.keys
+
+export const equalFlat = (a, b) => {
+  const keys = Object.keys(a)
+  let eq = keys.length === Object.keys(b).length
+  for (let i = 0; i < keys.length && eq; i++) {
+    const key = keys[i]
+    eq = a[key] === b[key]
+  }
+  return eq
+}