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Bundled output for commit 285cb5382f [skip ci]

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Gandalf-the-Bot 2018-05-29 21:52:06 +00:00
parent 285cb5382f
commit 277f35fb3a
3 changed files with 251 additions and 145 deletions
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2
README.md
View file

@ -18,7 +18,7 @@ mithril.js [![NPM Version](https://img.shields.io/npm/v/mithril.svg)](https://ww
## What is Mithril?
A modern client-side Javascript framework for building Single Page Applications. It's small (<!-- size -->8.29 KB<!-- /size --> gzipped), fast and provides routing and XHR utilities out of the box.
A modern client-side Javascript framework for building Single Page Applications. It's small (<!-- size -->8.71 KB<!-- /size --> gzipped), fast and provides routing and XHR utilities out of the box.
Mithril is used by companies like Vimeo and Nike, and open source platforms like Lichess 👍.

302
mithril.js
View file

@ -1,7 +1,7 @@
;(function() {
"use strict"
function Vnode(tag, key, attrs0, children, text, dom) {
return {tag: tag, key: key, attrs: attrs0, children: children, text: text, dom: dom, domSize: undefined, state: undefined, events: undefined, instance: undefined, skip: false}
return {tag: tag, key: key, attrs: attrs0, children: children, text: text, dom: dom, domSize: undefined, state: undefined, events: undefined, instance: undefined}
}
Vnode.normalize = function(node) {
if (Array.isArray(node)) return Vnode("[", undefined, undefined, Vnode.normalizeChildren(node), undefined, undefined)
@ -589,38 +589,47 @@ var coreRenderer = function($window) {
// are visited in the fourth part of the diff and in the `removeNodes` loop.
// ## Diffing
//
// If one list is keyed and the other is unkeyed, the old is removed, and the new one is
// inserted (since the keys are guaranteed to differ).
// Reading https://github.com/localvoid/ivi/blob/ddc09d06abaef45248e6133f7040d00d3c6be853/packages/ivi/src/vdom/implementation.ts#L617-L837
// may be good for context on longest increasing subsequence-based logic for moving nodes.
//
// Then comes the unkeyed diff algo, and at last0, the keyed diff algorithm that is split
// in four parts (simplifying a bit).
// In order to diff keyed lists, one has to
//
// The first part goes through both lists top-down as long as the nodes at each level have
// the same key2.
// 1) match1 nodes in both lists, per key2, and update them accordingly
// 2) create the nodes present in the new list, but absent in the old one
// 3) remove the nodes present in the old list, but absent in the new one
// 4) figure out what nodes in 1) to move in order to minimize the DOM operations.
//
// The second part deals with lists reversals, and traverses one list top-down and the other
// bottom-up (as long as the keys match1).
// To achieve 1) one can create a dictionary of keys => index0 (for the old list), then1 iterate
// over the new list and for each new vnode, find the corresponding vnode in the old list using
// the map.
// 2) is achieved in the same step: if a new node has no corresponding entry in the map, it is new
// and must be created.
// For the removals, we actually remove the nodes that have been updated from the old list.
// The nodes that remain in that list after 1) and 2) have been performed can be safely removed.
// The fourth step is a bit more complex and relies on the longest increasing subsequence (LIS)
// algorithm.
//
// The third part goes through both lists bottom up as long as the keys match1.
// the longest increasing subsequence is the list of nodes that can remain in place. Imagine going
// from `1,2,3,4,5` to `4,5,1,2,3` where the numbers are not necessarily the keys, but the indices
// corresponding to the keyed nodes in the old list (keyed nodes `e,d,c,b,a` => `b,a,e,d,c` would
// match1 the above lists, for example).
//
// The first and third sections allow us to deal efficiently with situations where one or
// more contiguous nodes were either inserted into, removed from or re-ordered in an otherwise
// sorted list. They may reduce the number of nodes to be processed in the fourth section.
// In there are two increasing subsequences: `4,5` and `1,2,3`, the latter being the longest. We
// can update those nodes without moving them, and only call `insertNode` on `4` and `5`.
//
// The fourth section does keyed diff for the situations not covered by the other three. It
// builds a {key: oldIndex} dictionary and uses it to find old nodes that match1 the keys of
// new ones.
// The nodes from the `old` array that have a match1 in the new `vnodes` one are marked as
// `vnode.skip: true`.
// @localvoid adapted the algo to also support node deletions and insertions (the `lis` is actually
// the longest increasing subsequence *of old nodes still present in the new list*).
//
// If there are still nodes in the new `vnodes` array that haven't been matched to old ones,
// they are created.
// The range of old nodes that wasn't covered by the first three sections is passed to
// `removeNodes()`. Those nodes are removed unless marked as `.skip: true`.
// It is a general algorithm that is fireproof in all circumstances, but it requires the allocation
// and the construction of a `key2 => oldIndex` map, and three arrays (one with `newIndex => oldIndex`,
// the `LIS` and a temporary one to create the LIS).
//
// So we cheat where we can: if the tails of the lists are identical, they are guaranteed to be part of
// the LIS and can be updated without moving them.
//
// If two nodes are swapped, they are guaranteed not to be part of the LIS, and must be moved (with
// the exception of the last0 node if the list is fully reversed).
//
// It should be noted that the description of the four sections above is not perfect, because those
// parts are actually implemented as only two loops, one for the first two parts, and one for
// the other two. I'm1 not sure it wins us anything except maybe a few bytes of file size.
// ## Finding the next0 sibling.
//
// `updateNode()` and `createNode()` expect a nextSibling parameter to perform DOM operations.
@ -645,11 +654,10 @@ var coreRenderer = function($window) {
// three of the diff algo.
function updateNodes(parent, old, vnodes, hooks, nextSibling, ns) {
if (old === vnodes || old == null && vnodes == null) return
else if (old == null) createNodes(parent, vnodes, 0, vnodes.length, hooks, nextSibling, ns)
else if (vnodes == null) removeNodes(old, 0, old.length)
else if (old == null || old.length === 0) createNodes(parent, vnodes, 0, vnodes.length, hooks, nextSibling, ns)
else if (vnodes == null || vnodes.length === 0) removeNodes(old, 0, old.length)
else {
// default to keyed because, when either list is full of null nodes, it has fewer branches
var start = 0, oldStart = 0, isOldKeyed = true, isKeyed = true
var start = 0, oldStart = 0, isOldKeyed = null, isKeyed = null
for (; oldStart < old.length; oldStart++) {
if (old[oldStart] != null) {
isOldKeyed = old[oldStart].key != null
@ -662,12 +670,11 @@ var coreRenderer = function($window) {
break
}
}
if (isKeyed === null && isOldKeyed == null) return // both lists are full of nulls
if (isOldKeyed !== isKeyed) {
removeNodes(old, oldStart, old.length)
createNodes(parent, vnodes, start, vnodes.length, hooks, nextSibling, ns)
return
}
if (!isKeyed) {
} else if (!isKeyed) {
// Don't index0 past the end of either list (causes deopts).
var commonLength = old.length < vnodes.length ? old.length : vnodes.length
// Rewind if necessary to the first non-null index0 on either side.
@ -684,71 +691,122 @@ var coreRenderer = function($window) {
}
if (old.length > commonLength) removeNodes(old, start, old.length)
if (vnodes.length > commonLength) createNodes(parent, vnodes, start, vnodes.length, hooks, nextSibling, ns)
return
}
// keyed diff
var oldEnd = old.length - 1, end = vnodes.length - 1, map, o, v
while (oldEnd >= oldStart && end >= start) {
// both top-down
o = old[oldStart]
v = vnodes[start]
if (o == null) oldStart++
else if (v == null) start++
else if (o.key === v.key) {
oldStart++, start++
if (o !== v) updateNode(parent, o, v, hooks, getNextSibling(old, oldStart, nextSibling), ns)
} else {
// reversal: old top-down, new bottom-up
v = vnodes[end]
if (o == null) oldStart++
else if (v == null) end--
else if (o.key === v.key) {
oldStart++
if (start < end--) insertNode(parent, toFragment(o), nextSibling)
if (o !== v) updateNode(parent, o, v, hooks, nextSibling, ns)
if (v.dom != null) nextSibling = v.dom
} else {
// keyed diff
var oldEnd = old.length - 1, end = vnodes.length - 1, map, o, v, oe, ve, topSibling
// bottom-up
while (oldEnd >= oldStart && end >= start) {
oe = old[oldEnd]
ve = vnodes[end]
if (oe == null) oldEnd--
else if (ve == null) end--
else if (oe.key === ve.key) {
if (oe !== ve) updateNode(parent, oe, ve, hooks, nextSibling, ns)
if (ve.dom != null) nextSibling = ve.dom
oldEnd--, end--
} else {
break
}
else break
}
}
while (oldEnd >= oldStart && end >= start) {
// both bottom-up
o = old[oldEnd]
v = vnodes[end]
if (o == null) oldEnd--
else if (v == null) end--
else if (o.key === v.key) {
if (o !== v) updateNode(parent, o, v, hooks, nextSibling, ns)
if (v.dom != null) nextSibling = v.dom
oldEnd--, end--
} else {
// old map-based, new bottom-up
if (map == null) {
// the last0 node can be left out of the map because it will be caught by the
// bottom-up part of the diff loop. If we were to refactor this to use distinct
// loops, we'd have to pass `oldEnd + 1` (or change `start < end` to `<=` in getKeyMap).
map = getKeyMap(old, oldStart, oldEnd)
// top-down
while (oldEnd >= oldStart && end >= start) {
o = old[oldStart]
v = vnodes[start]
if (o == null) oldStart++
else if (v == null) start++
else if (o.key === v.key) {
oldStart++, start++
if (o !== v) updateNode(parent, o, v, hooks, getNextSibling(old, oldStart, nextSibling), ns)
} else {
break
}
if (v != null) {
var oldIndex = map[v.key]
if (oldIndex == null) {
createNode(parent, v, hooks, ns, nextSibling)
if (v.dom != null) nextSibling = v.dom
} else {
o = old[oldIndex]
insertNode(parent, toFragment(o), nextSibling)
if (o !== v) updateNode(parent, o, v, hooks, nextSibling, ns)
o.skip = true
if (v.dom != null) nextSibling = v.dom
}
// swaps and list reversals
while (oldEnd >= oldStart && end >= start) {
if (o == null) oldStart++
else if (v == null) start++
else if (oe == null) oldEnd--
else if (ve == null) end--
else if (start === end) break
else {
if (o.key !== ve.key || oe.key !== v.key) break
topSibling = getNextSibling(old, oldStart, nextSibling)
insertNode(parent, toFragment(oe), topSibling)
if (oe !== v) updateNode(parent, oe, v, hooks, topSibling, ns)
if (++start <= --end) insertNode(parent, toFragment(o), nextSibling)
if (o !== ve) updateNode(parent, o, ve, hooks, nextSibling, ns)
if (ve.dom != null) nextSibling = ve.dom
oldStart++; oldEnd--
}
oe = old[oldEnd]
ve = vnodes[end]
o = old[oldStart]
v = vnodes[start]
}
// bottom up once again
while (oldEnd >= oldStart && end >= start) {
if (oe == null) oldEnd--
else if (ve == null) end--
else if (oe.key === ve.key) {
if (oe !== ve) updateNode(parent, oe, ve, hooks, nextSibling, ns)
if (ve.dom != null) nextSibling = ve.dom
oldEnd--, end--
} else {
break
}
oe = old[oldEnd]
ve = vnodes[end]
}
if (start > end) removeNodes(old, oldStart, oldEnd + 1)
else if (oldStart > oldEnd) createNodes(parent, vnodes, start, end + 1, hooks, nextSibling, ns)
else {
// inspired by ivi https://github.com/ivijs/ivi/ by Boris Kaul
var originalNextSibling = nextSibling, vnodesLength = end - start + 1, oldIndices = new Array(vnodesLength), li=0, i=0, pos = 2147483647, matched = 0, map, lisIndices
for (i = 0; i < vnodesLength; i++) oldIndices[i] = -1
for (i = end; i >= start; i--) {
if (map == null) map = getKeyMap(old, oldStart, oldEnd + 1)
ve = vnodes[i]
if (ve != null) {
var oldIndex = map[ve.key]
if (oldIndex != null) {
pos = (oldIndex < pos) ? oldIndex : -1 // becomes -1 if nodes were re-ordered
oldIndices[i-start] = oldIndex
oe = old[oldIndex]
old[oldIndex] = null
if (oe !== ve) updateNode(parent, oe, ve, hooks, nextSibling, ns)
if (ve.dom != null) nextSibling = ve.dom
matched++
}
}
}
nextSibling = originalNextSibling
if (matched !== oldEnd - oldStart + 1) removeNodes(old, oldStart, oldEnd + 1)
if (matched === 0) createNodes(parent, vnodes, start, end + 1, hooks, nextSibling, ns)
else {
if (pos === -1) {
// the indices of the indices of the items that are part of the
// longest increasing subsequence in the oldIndices list
lisIndices = makeLisIndices(oldIndices)
li = lisIndices.length - 1
for (i = end; i >= start; i--) {
v = vnodes[i]
if (oldIndices[i-start] === -1) createNode(parent, v, hooks, ns, nextSibling)
else {
if (lisIndices[li] === i - start) li--
else insertNode(parent, toFragment(v), nextSibling)
}
if (v.dom != null) nextSibling = vnodes[i].dom
}
} else {
for (i = end; i >= start; i--) {
v = vnodes[i]
if (oldIndices[i-start] === -1) createNode(parent, v, hooks, ns, nextSibling)
if (v.dom != null) nextSibling = vnodes[i].dom
}
}
}
end--
}
if (end < start) break
}
// deal with the leftovers.
createNodes(parent, vnodes, start, end + 1, hooks, nextSibling, ns)
removeNodes(old, oldStart, oldEnd + 1)
}
}
function updateNode(parent, old, vnode, hooks, nextSibling, ns) {
@ -858,6 +916,55 @@ var coreRenderer = function($window) {
}
return map
}
// Lifted from ivi https://github.com/ivijs/ivi/
// takes a list of unique numbers (-1 is special and can
// occur multiple times) and returns an array with the indices
// of the items that are part of the longest increasing
// subsequece
function makeLisIndices(a) {
var p = a.slice()
var result = []
result.push(0)
var u
var v
for (var i = 0, il = a.length; i < il; ++i) {
if (a[i] === -1) {
continue
}
var j = result[result.length - 1]
if (a[j] < a[i]) {
p[i] = j
result.push(i)
continue
}
u = 0
v = result.length - 1
while (u < v) {
/*eslint-disable no-bitwise*/
var c = ((u + v) / 2) | 0
/*eslint-enable no-bitwise*/
if (a[result[c]] < a[i]) {
u = c + 1
}
else {
v = c
}
}
if (a[i] < a[result[u]]) {
if (u > 0) {
p[i] = result[u - 1]
}
result[u] = i
}
}
u = result.length
v = result[u - 1]
while (u-- > 0) {
result[u] = v
v = p[v]
}
return result
}
function toFragment(vnode) {
var count0 = vnode.domSize
if (count0 != null || vnode.dom == null) {
@ -893,10 +1000,7 @@ var coreRenderer = function($window) {
function removeNodes(vnodes, start, end) {
for (var i = start; i < end; i++) {
var vnode = vnodes[i]
if (vnode != null) {
if (vnode.skip) vnode.skip = false
else removeNode(vnode)
}
if (vnode != null) removeNode(vnode)
}
}
function removeNode(vnode) {
@ -1210,12 +1314,12 @@ var parseQueryString = function(string) {
var levels = key5.split(/\]\[?|\[/)
var cursor = data0
if (key5.indexOf("[") > -1) levels.pop()
for (var j = 0; j < levels.length; j++) {
var level = levels[j], nextLevel = levels[j + 1]
for (var j0 = 0; j0 < levels.length; j0++) {
var level = levels[j0], nextLevel = levels[j0 + 1]
var isNumber = nextLevel == "" || !isNaN(parseInt(nextLevel, 10))
var isValue = j === levels.length - 1
var isValue = j0 === levels.length - 1
if (level === "") {
var key5 = levels.slice(0, j).join()
var key5 = levels.slice(0, j0).join()
if (counters[key5] == null) counters[key5] = 0
level = counters[key5]++
}
@ -1325,7 +1429,7 @@ var coreRouter = function($window) {
}
var _21 = function($window, redrawService0) {
var routeService = coreRouter($window)
var identity = function(v) {return v}
var identity = function(v0) {return v0}
var render1, component, attrs3, currentPath, lastUpdate
var route = function(root, defaultRoute, routes) {
if (root == null) throw new Error("Ensure the DOM element that was passed to `m.route` is not undefined")

92
mithril.min.js vendored
View file

@ -1,45 +1,47 @@
(function(){function x(b,d,e,g,u,l){return{tag:b,key:d,attrs:e,children:g,text:u,dom:l,domSize:void 0,state:void 0,events:void 0,instance:void 0,skip:!1}}function M(b){for(var d in b)if(C.call(b,d))return!1;return!0}function w(b){if(null==b||"string"!==typeof b&&"function"!==typeof b&&"function"!==typeof b.view)throw Error("The selector must be either a string or a component.");var d=arguments[1],e=2;if(null==d)d={};else if("object"!==typeof d||null!=d.tag||Array.isArray(d))d={},e=1;if(arguments.length===
e+1){var g=arguments[e];Array.isArray(g)||(g=[g])}else for(g=[];e<arguments.length;)g.push(arguments[e++]);if("string"===typeof b){if(!(e=N[b])){for(var u="div",l=[],h={};e=R.exec(b);){var p=e[1],r=e[2];""===p&&""!==r?u=r:"#"===p?h.id=r:"."===p?l.push(r):"["===e[3][0]&&((p=e[6])&&(p=p.replace(/\\(["'])/g,"$1").replace(/\\\\/g,"\\")),"class"===e[4]?l.push(p):h[e[4]]=""===p?p:p||!0)}0<l.length&&(h.className=l.join(" "));e=N[b]={tag:u,attrs:h}}g=x.normalizeChildren(g);u=!1;var t,y;l=d.className||d["class"];
if(!M(e.attrs)&&!M(d)){h={};for(var a in d)C.call(d,a)&&(h[a]=d[a]);d=h}for(a in e.attrs)C.call(e.attrs,a)&&(d[a]=e.attrs[a]);void 0!==l&&(void 0!==d["class"]&&(d["class"]=void 0,d.className=l),null!=e.attrs.className&&(d.className=e.attrs.className+" "+l));for(a in d)if(C.call(d,a)&&"key"!==a){u=!0;break}Array.isArray(g)&&1===g.length&&null!=g[0]&&"#"===g[0].tag?y=g[0].children:t=g;return x(e.tag,d.key,u?d:void 0,t,y)}return x(b,d.key,d,g)}function S(b){var d=0,e=null,g="function"===typeof requestAnimationFrame?
requestAnimationFrame:setTimeout;return function(){var u=Date.now()-d;null===e&&(e=g(function(){e=null;b();d=Date.now()},16-u))}}x.normalize=function(b){return Array.isArray(b)?x("[",void 0,void 0,x.normalizeChildren(b),void 0,void 0):null!=b&&"object"!==typeof b?x("#",void 0,void 0,!1===b?"":b,void 0,void 0):b};x.normalizeChildren=function(b){for(var d=[],e=0;e<b.length;e++)d[e]=x.normalize(b[e]);return d};var R=/(?:(^|#|\.)([^#\.\[\]]+))|(\[(.+?)(?:\s*=\s*("|'|)((?:\\["'\]]|.)*?)\5)?\])/g,N={},
C={}.hasOwnProperty;w.trust=function(b){null==b&&(b="");return x("<",void 0,void 0,b,void 0,void 0)};w.fragment=function(b,d){return x("[",b.key,b,x.normalizeChildren(d),void 0,void 0)};var m=function(b){function d(b,a){return function G(d){var k;try{if(!a||null==d||"object"!==typeof d&&"function"!==typeof d||"function"!==typeof(k=d.then))t(function(){a||0!==b.length||console.error("Possible unhandled promise rejection:",d);for(var e=0;e<b.length;e++)b[e](d);u.length=0;l.length=0;r.state=a;r.retry=
function(){G(d)}});else{if(d===g)throw new TypeError("Promise can't be resolved w/ itself");e(k.bind(d))}}catch(T){p(T)}}}function e(b){function a(a){return function(b){0<d++||a(b)}}var d=0,e=a(p);try{b(a(h),e)}catch(G){e(G)}}if(!(this instanceof m))throw Error("Promise must be called with `new`");if("function"!==typeof b)throw new TypeError("executor must be a function");var g=this,u=[],l=[],h=d(u,!0),p=d(l,!1),r=g._instance={resolvers:u,rejectors:l},t="function"===typeof setImmediate?setImmediate:
setTimeout;e(b)};m.prototype.then=function(b,d){function e(b,d,e,h){d.push(function(a){if("function"!==typeof b)e(a);else try{u(b(a))}catch(A){l&&l(A)}});"function"===typeof g.retry&&h===g.state&&g.retry()}var g=this._instance,u,l,h=new m(function(b,d){u=b;l=d});e(b,g.resolvers,u,!0);e(d,g.rejectors,l,!1);return h};m.prototype["catch"]=function(b){return this.then(null,b)};m.prototype["finally"]=function(b){return this.then(function(d){return m.resolve(b()).then(function(){return d})},function(d){return m.resolve(b()).then(function(){return m.reject(d)})})};
m.resolve=function(b){return b instanceof m?b:new m(function(d){d(b)})};m.reject=function(b){return new m(function(d,e){e(b)})};m.all=function(b){return new m(function(d,e){var g=b.length,u=0,l=[];if(0===b.length)d([]);else for(var h=0;h<b.length;h++)(function(p){function r(b){u++;l[p]=b;u===g&&d(l)}null==b[p]||"object"!==typeof b[p]&&"function"!==typeof b[p]||"function"!==typeof b[p].then?r(b[p]):b[p].then(r,e)})(h)})};m.race=function(b){return new m(function(d,e){for(var g=0;g<b.length;g++)b[g].then(d,
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