output mithril, stream and ospec esm versions on build - fixes #2112 (#2194)

* output mithril, stream and ospec esm versions on build

* Add esm bundles

* [request] Clearer error message for JSON deserialization failure (#2195)

* Bundled output for commit fd7cf8041e [skip ci]

* Fix #1714 conditionally halting stream (#2200)

* Fix #1714 conditionally halting stream

* Add note in changelog

* Do not include stream as named export in mithril.esm.js

* Rename mithril.min.esm.js to mithril.esm.min.js

* Add esm files to eslintignore

* Add named exports

* Add hyperscript `m` as named export

* Add builds with export changes

* checkout regular bundled files

* Change .esm.js to .mjs

* Update pkg module to point to .mjs

* Fix for export names to avoid collision

* Updated bundled files

.eslintignore

@@ -3,5 +3,8 @@ coverage/
 docs/lib/
 examples/
 /mithril.js
+/mithril.mjs
 /mithril.min.js
+/mithril.min.mjs
+/stream/stream.mjs
 node_modules/

esm.js

@@ -0,0 +1,68 @@
+"use strict"
+
+/*
+
+This script will create esm compatible scripts
+from the already compiled versions of:
+
+- mithril.js > mithril.mjs
+- mithril.min.js > mithril.min.mjs
+- /stream/stream.js > stream.mjs
+
+*/
+
+var fs = require("fs")
+
+var namedExports = [
+	"m",
+	"trust",
+	"fragment",
+	"mount",
+	"route",
+	"withAttr",
+	"render",
+	"redraw",
+	"request",
+	"jsonp",
+	"parseQueryString",
+	"buildQueryString",
+	"version",
+	"vnode",
+	"PromisePolyfill"
+]
+
+var mithril = fs.readFileSync("mithril.js", "utf8")
+fs.writeFileSync("mithril.mjs",
+	mithril.slice(
+		mithril.indexOf("\"use strict\"") + 13,
+		mithril.lastIndexOf("if (typeof module")
+	)
+	+ "\nexport default m"
+	// The exports are declared with prefixed underscores to avoid overwriting previously
+	// declared variables with the same name
+	+ "\nvar " + namedExports.map(function(n) { return "_" + n + " = m." + n }).join(",")
+	+ "\nexport {" + namedExports.map(function(n) { return "_" + n + " as " + n }).join(",") + "}"
+)
+
+var mithrilMin = fs.readFileSync("mithril.min.js", "utf8")
+var mName = mithrilMin.match(/window\.m=([a-z])}/)[1]
+fs.writeFileSync("mithril.min.mjs",
+	mithrilMin.slice(
+		12,
+		mithrilMin.lastIndexOf("\"undefined\"!==typeof module")
+	)
+	+ "export default " + mName + ";"
+	// The exports are declared with prefixed underscores to avoid overwriting previously
+	// declared variables with the same name
+	+ "var " + namedExports.map(function(n) { return "_" + n + "=m." + n }).join(",") + ";"
+	+ "export {" + namedExports.map(function(n) { return "_" + n + " as " + n }).join(",") + "};"
+)
+
+var stream = fs.readFileSync("stream/stream.js", "utf8")
+fs.writeFileSync("stream/stream.mjs",
+	stream.slice(
+		stream.indexOf("\"use strict\"") + 13,
+		stream.lastIndexOf("if (typeof module")
+	)
+	+ "\nexport default createStream"
+)

index.js

@@ -1,6 +1,11 @@
 "use strict"
 
-var m = require("./hyperscript")
+var hyperscript = require("./hyperscript")
+var m = function m() { return hyperscript.apply(this, arguments) }
+m.m = hyperscript
+m.trust = hyperscript.trust
+m.fragment = hyperscript.fragment
+
 var requestService = require("./request")
 var redrawService = require("./redraw")
 

mithril.min.mjs

@@ -0,0 +1,48 @@
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+e+1){var g=arguments[e];Array.isArray(g)||(g=[g])}else for(g=[];e<arguments.length;)g.push(arguments[e++]);if("string"===typeof a){if(!(e=R[a])){for(var q="div",k=[],h={};e=W.exec(a);){var m=e[1],n=e[2];""===m&&""!==n?q=n:"#"===m?h.id=n:"."===m?k.push(n):"["===e[3][0]&&((m=e[6])&&(m=m.replace(/\\(["'])/g,"$1").replace(/\\\\/g,"\\")),"class"===e[4]?k.push(m):h[e[4]]=""===m?m:m||!0)}0<k.length&&(h.className=k.join(" "));e=R[a]={tag:q,attrs:h}}g=x.normalizeChildren(g);q=!1;var l,C;k=G.call(d,"class")?
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+l;if(null!=t)for(p in t)D(f,p,g&&g[p],t[p],u);var C;if(null!=g)for(p in g)if(null!=(C=g[p])&&(null==t||null==t[p])){y=f;var r=p,v=u;"key"===r||"is"===r||null==C||w(r)||("o"!==r[0]||"n"!==r[1]||w(r)?"style"===r?T(y.dom,C,null):!S(y,r,v)||"className"===r||"option"===y.tag&&"value"===r||"input"===y.tag&&"type"===r?(v=r.indexOf(":"),-1!==v&&(r=r.slice(v+1)),!1!==C&&y.dom.removeAttribute("className"===r?"class":r)):y.dom[r]=null:U(y,r,void 0))}null!=f.attrs&&null!=f.attrs.contenteditable?c(f):null!=b.text&&
+null!=f.text&&""!==f.text?b.text.toString()!==f.text.toString()&&(b.dom.firstChild.nodeValue=f.text):(null!=b.text&&(b.children=[x("#",void 0,void 0,b.text,void 0,b.dom.firstChild)]),null!=f.text&&(f.children=[x("#",void 0,void 0,f.text,void 0,void 0)]),h(a,b.children,f.children,d,null,l))}else{f.instance=x.normalize(e.call(f.state.view,f));if(f.instance===f)throw Error("A view cannot return the vnode it received as argument");null!=f.attrs&&L(f.attrs,f,d);L(f.state,f,d);null!=f.instance?(null==b.instance?
+q(a,f.instance,d,l,g):m(a,b.instance,f.instance,d,g,l),f.dom=f.instance.dom,f.domSize=f.instance.domSize):null!=b.instance?(F(b.instance),f.dom=void 0,f.domSize=0):(f.dom=b.dom,f.domSize=b.domSize)}}else F(b),q(a,f,d,l,g)}function n(a){var b=a.domSize;if(null!=b||null==a.dom){var c=E.createDocumentFragment();if(0<b){for(a=a.dom;--b;)c.appendChild(a.nextSibling);c.insertBefore(a,c.firstChild)}return c}return a.dom}function l(a,b,c){for(;b<a.length;b++)if(null!=a[b]&&null!=a[b].dom)return a[b].dom;
+return c}function C(a,b,c){null!=c?a.insertBefore(b,c):a.appendChild(b)}function c(a){var b=a.children;if(null!=b&&1===b.length&&"<"===b[0].tag)b=b[0].children,a.dom.innerHTML!==b&&(a.dom.innerHTML=b);else if(null!=a.text||null!=b&&0!==b.length)throw Error("Child node of a contenteditable must be trusted");}function y(a,b,c){for(;b<c;b++){var f=a[b];null!=f&&F(f)}}function F(a){function b(){if(++t===c&&(d(a,g),p(a),a.dom)){for(var b=a.dom.parentNode,f=a.domSize||1;--f;)b.removeChild(a.dom.nextSibling);
+b.removeChild(a.dom)}}var c=1,t=0,g=a.state;if(a.attrs&&"function"===typeof a.attrs.onbeforeremove){var n=e.call(a.attrs.onbeforeremove,a);null!=n&&"function"===typeof n.then&&(c++,n.then(b,b))}"string"!==typeof a.tag&&"function"===typeof a.state.onbeforeremove&&(n=e.call(a.state.onbeforeremove,a),null!=n&&"function"===typeof n.then&&(c++,n.then(b,b)));b()}function p(a){a.attrs&&"function"===typeof a.attrs.onremove&&e.call(a.attrs.onremove,a);if("string"!==typeof a.tag)"function"===typeof a.state.onremove&&
+e.call(a.state.onremove,a),null!=a.instance&&p(a.instance);else if(a=a.children,Array.isArray(a))for(var b=0;b<a.length;b++){var c=a[b];null!=c&&p(c)}}function D(a,b,c,d,e){if("key"!==b&&"is"!==b&&null!=d&&!w(b)&&(c!==d||"value"===b||"checked"===b||"selectedIndex"===b||"selected"===b&&a.dom===E.activeElement||"option"===a.tag&&a.dom.parentNode===E.activeElement||"object"===typeof d)){if("o"===b[0]&&"n"===b[1])return U(a,b,d);"xlink:"===b.slice(0,6)?a.dom.setAttributeNS("http://www.w3.org/1999/xlink",
+b.slice(6),d):"style"===b?T(a.dom,c,d):S(a,b,e)?"value"===b&&(("input"===a.tag||"textarea"===a.tag)&&a.dom.value===""+d&&a.dom===E.activeElement||"select"===a.tag&&null!==c&&a.dom.value===""+d||"option"===a.tag&&null!==c&&a.dom.value===""+d)||("input"===a.tag&&"type"===b?a.dom.setAttribute(b,d):a.dom[b]=d):"boolean"===typeof d?d?a.dom.setAttribute(b,""):a.dom.removeAttribute(b):a.dom.setAttribute("className"===b?"class":b,d)}}function w(a){return"oninit"===a||"oncreate"===a||"onupdate"===a||"onremove"===
+a||"onbeforeremove"===a||"onbeforeupdate"===a}function S(a,b,c){return void 0===c&&(-1<a.tag.indexOf("-")||null!=a.attrs&&a.attrs.is||"href"!==key&&"list"!==b&&"form"!==b&&"width"!==b&&"height"!==b)&&b in a.dom}function T(a,b,c){if(null!=b&&null!=c&&"object"===typeof b&&"object"===typeof c&&c!==b){for(var d in c)c[d]!==b[d]&&(a.style[d]=c[d]);for(d in b)d in c||(a.style[d]="")}else if(b===c&&(a.style.cssText="",b=null),null==c)a.style.cssText="";else if("string"===typeof c)a.style.cssText=c;else for(d in"string"===
+typeof b&&(a.style.cssText=""),c)a.style[d]=c[d]}function M(){}function U(a,b,c){null!=a.events?a.events[b]!==c&&(null==c||"function"!==typeof c&&"object"!==typeof c?(null!=a.events[b]&&a.dom.removeEventListener(b.slice(2),a.events,!1),a.events[b]=void 0):(null==a.events[b]&&a.dom.addEventListener(b.slice(2),a.events,!1),a.events[b]=c)):null==c||"function"!==typeof c&&"object"!==typeof c||(a.events=new M,a.dom.addEventListener(b.slice(2),a.events,!1),a.events[b]=c)}function N(a,b,c){"function"===
+typeof a.oninit&&e.call(a.oninit,b);"function"===typeof a.oncreate&&c.push(e.bind(a.oncreate,b))}function L(a,b,c){"function"===typeof a.onupdate&&c.push(e.bind(a.onupdate,b))}var E=a.document,G={svg:"http://www.w3.org/2000/svg",math:"http://www.w3.org/1998/Math/MathML"},H,I={caption:"table",thead:"table",tbody:"table",tfoot:"table",tr:"tbody",th:"tr",td:"tr",colgroup:"table",col:"colgroup"};M.prototype=Object.create(null);M.prototype.handleEvent=function(a){var b=this["on"+a.type],c;"function"===
+typeof b?c=b.call(a.target,a):"function"===typeof b.handleEvent&&b.handleEvent(a);"function"===typeof H&&H.call(a.target,a);!1===c&&(a.preventDefault(),a.stopPropagation())};return{render:function(a,b){if(!a)throw Error("Ensure the DOM element being passed to m.route/m.mount/m.render is not undefined.");var c=[],d=E.activeElement,e=a.namespaceURI;null==a.vnodes&&(a.textContent="");Array.isArray(b)||(b=[b]);h(a,a.vnodes,x.normalizeChildren(b),c,null,"http://www.w3.org/1999/xhtml"===e?void 0:e);a.vnodes=
+b;null!=d&&E.activeElement!==d&&"function"===typeof d.focus&&d.focus();for(d=0;d<c.length;d++)c[d]()},setEventCallback:function(a){return H=a}}},I=function(a,d){function e(a){a=k.indexOf(a);-1<a&&k.splice(a,2)}function g(){if(h)throw Error("Nested m.redraw.sync() call");h=!0;for(var a=1;a<k.length;a+=2)try{k[a]()}catch(l){"undefined"!==typeof console&&console.error(l)}h=!1}var q=V(a);q.setEventCallback(function(a){!1===a.redraw?a.redraw=void 0:m()});var k=[],h=!1,m=(d||X)(g);m.sync=g;return{subscribe:function(a,
+d){e(a);k.push(a,d)},unsubscribe:e,redraw:m,render:q.render}}(window);O.setCompletionCallback(I.redraw);w.mount=function(a){return function(d,e){if(null===e)a.render(d,[]),a.unsubscribe(d);else{if(null==e.view&&"function"!==typeof e)throw Error("m.mount(element, component) expects a component, not a vnode");var g=function(){a.render(d,x(e))};a.subscribe(d,g);g()}}}(I);var ba=p,P=function(a){if(""===a||null==a)return{};"?"===a.charAt(0)&&(a=a.slice(1));a=a.split("&");for(var d={},e={},g=0;g<a.length;g++){var q=
+a[g].split("="),k=decodeURIComponent(q[0]);q=2===q.length?decodeURIComponent(q[1]):"";"true"===q?q=!0:"false"===q&&(q=!1);var h=k.split(/\]\[?|\[/),m=d;-1<k.indexOf("[")&&h.pop();for(var n=0;n<h.length;n++){k=h[n];var l=h[n+1];l=""==l||!isNaN(parseInt(l,10));var p=n===h.length-1;""===k&&(k=h.slice(0,n).join(),null==e[k]&&(e[k]=0),k=e[k]++);null==m[k]&&(m[k]=p?q:l?[]:{});m=m[k]}}return d},ca=function(a){function d(d){var e=a.location[d].replace(/(?:%[a-f89][a-f0-9])+/gim,decodeURIComponent);"pathname"===
+d&&"/"!==e[0]&&(e="/"+e);return e}function e(a){return function(){null==h&&(h=k(function(){h=null;a()}))}}function g(a,d,e){var c=a.indexOf("?"),g=a.indexOf("#"),h=-1<c?c:-1<g?g:a.length;if(-1<c){c=P(a.slice(c+1,-1<g?g:a.length));for(var k in c)d[k]=c[k]}if(-1<g)for(k in d=P(a.slice(g+1)),d)e[k]=d[k];return a.slice(0,h)}var q="function"===typeof a.history.pushState,k="function"===typeof setImmediate?setImmediate:setTimeout,h,m={prefix:"#!",getPath:function(){switch(m.prefix.charAt(0)){case "#":return d("hash").slice(m.prefix.length);
+case "?":return d("search").slice(m.prefix.length)+d("hash");default:return d("pathname").slice(m.prefix.length)+d("search")+d("hash")}},setPath:function(d,e,k){var c={},h={};d=g(d,c,h);if(null!=e){for(var l in e)c[l]=e[l];d=d.replace(/:([^\/]+)/g,function(a,d){delete c[d];return e[d]})}(l=H(c))&&(d+="?"+l);(h=H(h))&&(d+="#"+h);q?(h=k?k.state:null,l=k?k.title:null,a.onpopstate(),k&&k.replace?a.history.replaceState(h,l,m.prefix+d):a.history.pushState(h,l,m.prefix+d)):a.location.href=m.prefix+d},defineRoutes:function(d,
+k,h){function c(){var c=m.getPath(),e={},l=g(c,e,e),n=a.history.state;if(null!=n)for(var q in n)e[q]=n[q];for(var p in d)if(n=new RegExp("^"+p.replace(/:[^\/]+?\.{3}/g,"(.*?)").replace(/:[^\/]+/g,"([^\\/]+)")+"/?$"),n.test(l)){l.replace(n,function(){for(var a=p.match(/:[^\/]+/g)||[],g=[].slice.call(arguments,1,-2),h=0;h<a.length;h++)e[a[h].replace(/:|\./g,"")]=decodeURIComponent(g[h]);k(d[p],e,c,p)});return}h(c,e)}q?a.onpopstate=e(c):"#"===m.prefix.charAt(0)&&(a.onhashchange=c);c()}};return m};w.route=
+function(a,d){var e=ca(a),g=function(a){return a},p,k,h,m,n,l=function(a,l,q){function c(){null!=p&&d.render(a,p(x(k,h.key,h)))}if(null==a)throw Error("Ensure the DOM element that was passed to `m.route` is not undefined");var y=function(){c();y=d.redraw};d.subscribe(a,c);var w=function(a){if(a!==l)e.setPath(l,null,{replace:!0});else throw Error("Could not resolve default route "+l);};e.defineRoutes(q,function(a,c,d){var e=n=function(a,l){e===n&&(k=null==l||"function"!==typeof l.view&&"function"!==
+typeof l?"div":l,h=c,m=d,n=null,p=(a.render||g).bind(a),y())};a.view||"function"===typeof a?e({},a):a.onmatch?ba.resolve(a.onmatch(c,d)).then(function(c){e(a,c)},w):e(a,"div")},w)};l.set=function(a,d,g){null!=n&&(g=g||{},g.replace=!0);n=null;e.setPath(a,d,g)};l.get=function(){return m};l.prefix=function(a){e.prefix=a};var w=function(a,d){d.dom.setAttribute("href",e.prefix+d.attrs.href);d.dom.onclick=function(c){c.ctrlKey||c.metaKey||c.shiftKey||2===c.which||(c.preventDefault(),c.redraw=!1,c=this.getAttribute("href"),
+0===c.indexOf(e.prefix)&&(c=c.slice(e.prefix.length)),l.set(c,void 0,a))}};l.link=function(a){return null==a.tag?w.bind(w,a):w({},a)};l.param=function(a){return"undefined"!==typeof h&&"undefined"!==typeof a?h[a]:h};return l}(window,I);w.withAttr=function(a,d,e){return function(g){d.call(e||this,a in g.currentTarget?g.currentTarget[a]:g.currentTarget.getAttribute(a))}};var da=V(window);w.render=da.render;w.redraw=I.redraw;w.request=O.request;w.jsonp=O.jsonp;w.parseQueryString=P;w.buildQueryString=
+H;w.version="1.1.3";w.vnode=x;w.PromisePolyfill=p;export default w;export var m = w.m,trust = w.trust,fragment = w.fragment,mount = w.mount,route = w.route,withAttr = w.withAttr,render = w.render,redraw = w.redraw,request = w.request,jsonp = w.jsonp,parseQueryString = w.parseQueryString,buildQueryString = w.buildQueryString,version = w.version,vnode = w.vnode,PromisePolyfill = w.PromisePolyfill;

ospec/esm.js

@@ -0,0 +1,19 @@
+"use strict"
+
+/*
+
+This script will create an esm compatible script
+from the already compiled version of:
+
+- ospec.js > ospec.mjs
+
+*/
+
+var fs = require("fs")
+
+var ospec = fs.readFileSync("ospec.js", "utf8")
+fs.writeFileSync("ospec.mjs",
+	"export default "
+	+ ospec.slice(ospec.indexOf("})") + 2)
+	+ "()"
+)

ospec/ospec.mjs

@@ -0,0 +1,363 @@
+export default (function init(name) {
+	var spec = {}, subjects = [], results, only = [], ctx = spec, start, stack = 0, nextTickish, hasProcess = typeof process === "object", hasOwn = ({}).hasOwnProperty
+	var ospecFileName = getStackName(ensureStackTrace(new Error), /[\/\\](.*?):\d+:\d+/), timeoutStackName
+	var globalTimeout = noTimeoutRightNow
+	var currentTestError = null
+	if (name != null) spec[name] = ctx = {}
+
+	function o(subject, predicate) {
+		if (predicate === undefined) {
+			if (!isRunning()) throw new Error("Assertions should not occur outside test definitions")
+			return new Assert(subject)
+		} else {
+			if (isRunning()) throw new Error("Test definitions and hooks shouldn't be nested. To group tests use `o.spec()`")
+			subject = String(subject)
+			if (subject.charCodeAt(0) === 1) throw new Error("test names starting with '\\x01' are reserved for internal use")
+			ctx[unique(subject)] = new Task(predicate, ensureStackTrace(new Error))
+		}
+	}
+	o.before = hook("\x01before")
+	o.after = hook("\x01after")
+	o.beforeEach = hook("\x01beforeEach")
+	o.afterEach = hook("\x01afterEach")
+	o.specTimeout = function (t) {
+		if (isRunning()) throw new Error("o.specTimeout() can only be called before o.run()")
+		if (hasOwn.call(ctx, "\x01specTimeout")) throw new Error("A default timeout has already been defined in this context")
+		if (typeof t !== "number") throw new Error("o.specTimeout() expects a number as argument")
+		ctx["\x01specTimeout"] = t
+	}
+	o.new = init
+	o.spec = function(subject, predicate) {
+		var parent = ctx
+		ctx = ctx[unique(subject)] = {}
+		predicate()
+		ctx = parent
+	}
+	o.only = function(subject, predicate, silent) {
+		if (!silent) console.log(
+			highlight("/!\\ WARNING /!\\ o.only() mode") + "\n" + o.cleanStackTrace(ensureStackTrace(new Error)) + "\n",
+			cStyle("red"), ""
+		)
+		only.push(predicate)
+		o(subject, predicate)
+	}
+	o.spy = function(fn) {
+		var spy = function() {
+			spy.this = this
+			spy.args = [].slice.call(arguments)
+			spy.callCount++
+
+			if (fn) return fn.apply(this, arguments)
+		}
+		if (fn)
+			Object.defineProperties(spy, {
+				length: {value: fn.length},
+				name: {value: fn.name}
+			})
+		spy.args = []
+		spy.callCount = 0
+		return spy
+	}
+	o.cleanStackTrace = function(error) {
+		// For IE 10+ in quirks mode, and IE 9- in any mode, errors don't have a stack
+		if (error.stack == null) return ""
+		var i = 0, header = error.message ? error.name + ": " + error.message : error.name, stack
+		// some environments add the name and message to the stack trace
+		if (error.stack.indexOf(header) === 0) {
+			stack = error.stack.slice(header.length).split(/\r?\n/)
+			stack.shift() // drop the initial empty string
+		} else {
+			stack = error.stack.split(/\r?\n/)
+		}
+		if (ospecFileName == null) return stack.join("\n")
+		// skip ospec-related entries on the stack
+		while (stack[i] != null && stack[i].indexOf(ospecFileName) !== -1) i++
+		// now we're in user code (or past the stack end)
+		return stack[i]
+	}
+	o.timeout = function(n) {
+		globalTimeout(n)
+	}
+	o.run = function(reporter) {
+		results = []
+		start = new Date
+		test(spec, [], [], new Task(function() {
+			setTimeout(function () {
+				timeoutStackName = getStackName({stack: o.cleanStackTrace(ensureStackTrace(new Error))}, /([\w \.]+?:\d+:\d+)/)
+				if (typeof reporter === "function") reporter(results)
+				else {
+					var errCount = o.report(results)
+					if (hasProcess && errCount !== 0) process.exit(1) // eslint-disable-line no-process-exit
+				}
+			})
+		}, null), 200 /*default timeout delay*/)
+
+		function test(spec, pre, post, finalize, defaultDelay) {
+			if (hasOwn.call(spec, "\x01specTimeout")) defaultDelay = spec["\x01specTimeout"]
+			pre = [].concat(pre, spec["\x01beforeEach"] || [])
+			post = [].concat(spec["\x01afterEach"] || [], post)
+			series([].concat(spec["\x01before"] || [], Object.keys(spec).reduce(function(tasks, key) {
+				if (key.charCodeAt(0) !== 1 && (only.length === 0 || only.indexOf(spec[key].fn) !== -1 || !(spec[key] instanceof Task))) {
+					tasks.push(new Task(function(done) {
+						o.timeout(Infinity)
+						subjects.push(key)
+						var pop = new Task(function pop() {subjects.pop(), done()}, null)
+						if (spec[key] instanceof Task) series([].concat(pre, spec[key], post, pop), defaultDelay)
+						else test(spec[key], pre, post, pop, defaultDelay)
+					}, null))
+				}
+				return tasks
+			}, []), spec["\x01after"] || [], finalize), defaultDelay)
+		}
+
+		function series(tasks, defaultDelay) {
+			var cursor = 0
+			next()
+
+			function next() {
+				if (cursor === tasks.length) return
+
+				var task = tasks[cursor++]
+				var fn = task.fn
+				currentTestError = task.err
+				var timeout = 0, delay = defaultDelay, s = new Date
+				var current = cursor
+				var arg
+
+				globalTimeout = setDelay
+
+				var isDone = false
+				// public API, may only be called once from use code (or after returned Promise resolution)
+				function done(err) {
+					if (!isDone) isDone = true
+					else throw new Error("`" + arg + "()` should only be called once")
+					if (timeout === undefined) console.warn("# elapsed: " + Math.round(new Date - s) + "ms, expected under " + delay + "ms\n" + o.cleanStackTrace(task.err))
+					finalizeAsync(err)
+				}
+				// for internal use only
+				function finalizeAsync(err) {
+					if (err == null) {
+						if (task.err != null) succeed(new Assert)
+					} else {
+						if (err instanceof Error) fail(new Assert, err.message, err)
+						else fail(new Assert, String(err), null)
+					}
+					if (timeout !== undefined) timeout = clearTimeout(timeout)
+					if (current === cursor) next()
+				}
+				function startTimer() {
+					timeout = setTimeout(function() {
+						timeout = undefined
+						finalizeAsync("async test timed out after " + delay + "ms")
+					}, Math.min(delay, 2147483647))
+				}
+				function setDelay (t) {
+					if (typeof t !== "number") throw new Error("timeout() and o.timeout() expect a number as argument")
+					delay = t
+				}
+				if (fn.length > 0) {
+					var body = fn.toString()
+					arg = (body.match(/^(.+?)(?:\s|\/\*[\s\S]*?\*\/|\/\/.*?\n)*=>/) || body.match(/\((?:\s|\/\*[\s\S]*?\*\/|\/\/.*?\n)*(.+?)(?:\s|\/\*[\s\S]*?\*\/|\/\/.*?\n)*[,\)]/) || []).pop()
+					if (body.indexOf(arg) === body.lastIndexOf(arg)) {
+						var e = new Error
+						e.stack = "`" + arg + "()` should be called at least once\n" + o.cleanStackTrace(task.err)
+						throw e
+					}
+					try {
+						fn(done, setDelay)
+					}
+					catch (e) {
+						if (task.err != null) finalizeAsync(e)
+						// The errors of internal tasks (which don't have an Err) are ospec bugs and must be rethrown.
+						else throw e
+					}
+					if (timeout === 0) {
+						startTimer()
+					}
+				} else {
+					try{
+						var p = fn()
+						if (p && p.then) {
+							startTimer()
+							p.then(function() { done() }, done)
+						} else {
+							nextTickish(next)
+						}
+					} catch (e) {
+						if (task.err != null) finalizeAsync(e)
+						// The errors of internal tasks (which don't have an Err) are ospec bugs and must be rethrown.
+						else throw e
+					}
+				}
+				globalTimeout = noTimeoutRightNow
+			}
+		}
+	}
+	function unique(subject) {
+		if (hasOwn.call(ctx, subject)) {
+			console.warn("A test or a spec named `" + subject + "` was already defined")
+			while (hasOwn.call(ctx, subject)) subject += "*"
+		}
+		return subject
+	}
+	function hook(name) {
+		return function(predicate) {
+			if (ctx[name]) throw new Error("This hook should be defined outside of a loop or inside a nested test group:\n" + predicate)
+			ctx[name] = new Task(predicate, ensureStackTrace(new Error))
+		}
+	}
+
+	define("equals", "should equal", function(a, b) {return a === b})
+	define("notEquals", "should not equal", function(a, b) {return a !== b})
+	define("deepEquals", "should deep equal", deepEqual)
+	define("notDeepEquals", "should not deep equal", function(a, b) {return !deepEqual(a, b)})
+
+	function isArguments(a) {
+		if ("callee" in a) {
+			for (var i in a) if (i === "callee") return false
+			return true
+		}
+	}
+	function deepEqual(a, b) {
+		if (a === b) return true
+		if (a === null ^ b === null || a === undefined ^ b === undefined) return false // eslint-disable-line no-bitwise
+		if (typeof a === "object" && typeof b === "object") {
+			var aIsArgs = isArguments(a), bIsArgs = isArguments(b)
+			if (a.constructor === Object && b.constructor === Object && !aIsArgs && !bIsArgs) {
+				for (var i in a) {
+					if ((!(i in b)) || !deepEqual(a[i], b[i])) return false
+				}
+				for (var i in b) {
+					if (!(i in a)) return false
+				}
+				return true
+			}
+			if (a.length === b.length && (a instanceof Array && b instanceof Array || aIsArgs && bIsArgs)) {
+				var aKeys = Object.getOwnPropertyNames(a), bKeys = Object.getOwnPropertyNames(b)
+				if (aKeys.length !== bKeys.length) return false
+				for (var i = 0; i < aKeys.length; i++) {
+					if (!hasOwn.call(b, aKeys[i]) || !deepEqual(a[aKeys[i]], b[aKeys[i]])) return false
+				}
+				return true
+			}
+			if (a instanceof Date && b instanceof Date) return a.getTime() === b.getTime()
+			if (typeof Buffer === "function" && a instanceof Buffer && b instanceof Buffer) {
+				for (var i = 0; i < a.length; i++) {
+					if (a[i] !== b[i]) return false
+				}
+				return true
+			}
+			if (a.valueOf() === b.valueOf()) return true
+		}
+		return false
+	}
+
+	function isRunning() {return results != null}
+	function Assert(value) {
+		this.value = value
+		this.i = results.length
+		results.push({pass: null, context: "", message: "Incomplete assertion in the test definition starting at...", error: currentTestError, testError: currentTestError})
+	}
+	function Task(fn, err) {
+		this.fn = fn
+		this.err = err
+	}
+	function define(name, verb, compare) {
+		Assert.prototype[name] = function assert(value) {
+			if (compare(this.value, value)) succeed(this)
+			else fail(this, serialize(this.value) + "\n  " + verb + "\n" + serialize(value))
+			var self = this
+			return function(message) {
+				if (!self.pass) self.message = message + "\n\n" + self.message
+			}
+		}
+	}
+	function succeed(assertion) {
+		results[assertion.i].pass = true
+	}
+	function fail(assertion, message, error) {
+		results[assertion.i].pass = false
+		results[assertion.i].context = subjects.join(" > ")
+		results[assertion.i].message = message
+		results[assertion.i].error = error != null ? error : ensureStackTrace(new Error)
+	}
+	function serialize(value) {
+		if (hasProcess) return require("util").inspect(value) // eslint-disable-line global-require
+		if (value === null || (typeof value === "object" && !(value instanceof Array)) || typeof value === "number") return String(value)
+		else if (typeof value === "function") return value.name || "<anonymous function>"
+		try {return JSON.stringify(value)} catch (e) {return String(value)}
+	}
+	function noTimeoutRightNow() {
+		throw new Error("o.timeout must be called snchronously from within a test definition or a hook")
+	}
+	var colorCodes = {
+		red: "31m",
+		red2: "31;1m",
+		green: "32;1m"
+	}
+	function highlight(message, color) {
+		var code = colorCodes[color] || colorCodes.red;
+		return hasProcess ? (process.stdout.isTTY ? "\x1b[" + code + message + "\x1b[0m" : message) : "%c" + message + "%c "
+	}
+	function cStyle(color, bold) {
+		return hasProcess||!color ? "" : "color:"+color+(bold ? ";font-weight:bold" : "")
+	}
+	function ensureStackTrace(error) {
+		// mandatory to get a stack in IE 10 and 11 (and maybe other envs?)
+		if (error.stack === undefined) try { throw error } catch(e) {return e}
+		else return error
+	}
+	function getStackName(e, exp) {
+		return e.stack && exp.test(e.stack) ? e.stack.match(exp)[1] : null
+	}
+
+	o.report = function (results) {
+		var errCount = 0
+		for (var i = 0, r; r = results[i]; i++) {
+			if (r.pass == null) {
+				r.testError.stack = r.message + "\n" + o.cleanStackTrace(r.testError)
+				r.testError.message = r.message
+				throw r.testError
+			}
+			if (!r.pass) {
+				var stackTrace = o.cleanStackTrace(r.error)
+				var couldHaveABetterStackTrace = !stackTrace || timeoutStackName != null && stackTrace.indexOf(timeoutStackName) !== -1
+				if (couldHaveABetterStackTrace) stackTrace = r.testError != null ? o.cleanStackTrace(r.testError) : r.error.stack || ""
+				console.error(
+					(hasProcess ? "\n" : "") +
+					highlight(r.context + ":", "red2") + "\n" +
+					highlight(r.message, "red") +
+					(stackTrace ? "\n" + stackTrace + "\n" : ""),
+
+					cStyle("black", true), "", // reset to default
+					cStyle("red"), cStyle("black")
+				)
+				errCount++
+			}
+		}
+		var pl = results.length === 1 ? "" : "s"
+		var resultSummary = (errCount === 0) ?
+			highlight((pl ? "All " : "The ") + results.length + " assertion" + pl + " passed", "green"):
+			highlight(errCount + " out of " + results.length + " assertion" + pl + " failed", "red2")
+		var runningTime = " in " + Math.round(Date.now() - start) + "ms"
+
+		console.log(
+			(hasProcess ? "––––––\n" : "") +
+			(name ? name + ": " : "") + resultSummary + runningTime,
+			cStyle((errCount === 0 ? "green" : "red"), true), ""
+		)
+		return errCount
+	}
+
+	if (hasProcess) {
+		nextTickish = process.nextTick
+	} else {
+		nextTickish = function fakeFastNextTick(next) {
+			if (stack++ < 5000) next()
+			else setTimeout(next, stack = 0)
+		}
+	}
+
+	return o
+})
+()

ospec/package.json

@@ -3,6 +3,7 @@
   "version": "3.0.1",
   "description": "Noiseless testing framework",
   "main": "ospec.js",
+  "module": "ospec.mjs",
   "directories": {
     "test": "tests"
   },
@@ -12,6 +13,9 @@
   "bin": {
     "ospec": "./bin/ospec"
   },
+  "scripts": {
+    "prepublishOnly": "node esm.js"
+  },
   "repository": "MithrilJS/mithril.js",
   "dependencies": {
     "glob": "^7.1.2"

package.json

@@ -5,12 +5,14 @@
   "author": "Leo Horie",
   "license": "MIT",
   "main": "mithril.js",
+  "module": "mithril.mjs",
   "repository": "MithrilJS/mithril.js",
   "scripts": {
     "dev": "node bundler/cli browser.js -output mithril.js -watch",
-    "build": "npm run build-browser & npm run build-min",
+    "build": "npm run build-browser & npm run build-min && npm run build-esm",
     "build-browser": "node bundler/cli browser.js -output mithril.js",
     "build-min": "node bundler/cli browser.js -output mithril.min.js -minify",
+    "build-esm": "node esm.js",
     "precommit": "lint-staged",
     "lintdocs": "node docs/lint",
     "gendocs": "node docs/generate",

stream/package.json

@@ -3,6 +3,7 @@
   "version": "1.1.0",
   "description": "Streaming data, mithril-style",
   "main": "stream.js",
+  "module": "stream.mjs",
   "directories": {
     "test": "tests"
   },

stream/stream.mjs

@@ -0,0 +1,156 @@
+/* eslint-enable */
+
+var guid = 0, HALT = {}
+function createStream() {
+	function stream() {
+		if (arguments.length > 0 && arguments[0] !== HALT) updateStream(stream, arguments[0])
+		return stream._state.value
+	}
+	initStream(stream)
+
+	if (arguments.length > 0 && arguments[0] !== HALT) updateStream(stream, arguments[0])
+
+	return stream
+}
+function initStream(stream) {
+	stream.constructor = createStream
+	stream._state = {id: guid++, value: undefined, state: 0, derive: undefined, recover: undefined, deps: {}, parents: [], endStream: undefined, unregister: undefined}
+	stream.map = stream["fantasy-land/map"] = map, stream["fantasy-land/ap"] = ap, stream["fantasy-land/of"] = createStream
+	stream.toJSON = toJSON
+
+	Object.defineProperties(stream, {
+		end: {get: function() {
+			if (!stream._state.endStream) {
+				var endStream = createStream()
+				endStream.map(function(value) {
+					if (value === true) {
+						unregisterStream(stream)
+						endStream._state.unregister = function(){unregisterStream(endStream)}
+					}
+					return value
+				})
+				stream._state.endStream = endStream
+			}
+			return stream._state.endStream
+		}}
+	})
+}
+function updateStream(stream, value) {
+	updateState(stream, value)
+	for (var id in stream._state.deps) updateDependency(stream._state.deps[id], false)
+	if (stream._state.unregister != null) stream._state.unregister()
+	finalize(stream)
+}
+function updateState(stream, value) {
+	stream._state.value = value
+	stream._state.changed = true
+	if (stream._state.state !== 2) stream._state.state = 1
+}
+function updateDependency(stream, mustSync) {
+	var state = stream._state, parents = state.parents
+	if (parents.length > 0 && parents.every(active) && (mustSync || parents.some(changed))) {
+		var value = stream._state.derive()
+		if (value === HALT) return unregisterStream(stream)
+		updateState(stream, value)
+	}
+}
+function finalize(stream) {
+	stream._state.changed = false
+	for (var id in stream._state.deps) stream._state.deps[id]._state.changed = false
+}
+
+function combine(fn, streams) {
+	if (!streams.every(valid)) throw new Error("Ensure that each item passed to stream.combine/stream.merge is a stream")
+	return initDependency(createStream(), streams, function() {
+		return fn.apply(this, streams.concat([streams.filter(changed)]))
+	})
+}
+
+function initDependency(dep, streams, derive) {
+	var state = dep._state
+	state.derive = derive
+	state.parents = streams.filter(notEnded)
+
+	registerDependency(dep, state.parents)
+	updateDependency(dep, true)
+
+	return dep
+}
+function registerDependency(stream, parents) {
+	for (var i = 0; i < parents.length; i++) {
+		parents[i]._state.deps[stream._state.id] = stream
+		registerDependency(stream, parents[i]._state.parents)
+	}
+}
+function unregisterStream(stream) {
+	for (var i = 0; i < stream._state.parents.length; i++) {
+		var parent = stream._state.parents[i]
+		delete parent._state.deps[stream._state.id]
+	}
+	for (var id in stream._state.deps) {
+		var dependent = stream._state.deps[id]
+		var index = dependent._state.parents.indexOf(stream)
+		if (index > -1) dependent._state.parents.splice(index, 1)
+	}
+	stream._state.state = 2 //ended
+	stream._state.deps = {}
+}
+
+function map(fn) {return combine(function(stream) {return fn(stream())}, [this])}
+function ap(stream) {return combine(function(s1, s2) {return s1()(s2())}, [stream, this])}
+function toJSON() {return this._state.value != null && typeof this._state.value.toJSON === "function" ? this._state.value.toJSON() : this._state.value}
+
+function valid(stream) {return stream._state }
+function active(stream) {return stream._state.state === 1}
+function changed(stream) {return stream._state.changed}
+function notEnded(stream) {return stream._state.state !== 2}
+
+function merge(streams) {
+	return combine(function() {
+		return streams.map(function(s) {return s()})
+	}, streams)
+}
+
+function scan(reducer, seed, stream) {
+	var newStream = combine(function (s) {
+		var next = reducer(seed, s._state.value)
+		if (next !== HALT) return seed = next
+		return HALT
+	}, [stream])
+
+	if (newStream._state.state === 0) newStream(seed)
+
+	return newStream
+}
+
+function scanMerge(tuples, seed) {
+	var streams = tuples.map(function(tuple) {
+		var stream = tuple[0]
+		if (stream._state.state === 0) stream(undefined)
+		return stream
+	})
+
+	var newStream = combine(function() {
+		var changed = arguments[arguments.length - 1]
+
+		streams.forEach(function(stream, idx) {
+			if (changed.indexOf(stream) > -1) {
+				seed = tuples[idx][1](seed, stream._state.value)
+			}
+		})
+
+		return seed
+	}, streams)
+
+	return newStream
+}
+
+createStream["fantasy-land/of"] = createStream
+createStream.merge = merge
+createStream.combine = combine
+createStream.scan = scan
+createStream.scanMerge = scanMerge
+createStream.HALT = HALT
+
+
+export default createStream