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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.Fragment = exports.memo = exports.jsx = exports.JSXNode = void 0;
const html_1 = require("../../utils/html");
const emptyTags = [
'area',
'base',
'br',
'col',
'embed',
'hr',
'img',
'input',
'keygen',
'link',
'meta',
'param',
'source',
'track',
'wbr',
];
const booleanAttributes = [
'allowfullscreen',
'async',
'autofocus',
'autoplay',
'checked',
'controls',
'default',
'defer',
'disabled',
'formnovalidate',
'hidden',
'inert',
'ismap',
'itemscope',
'loop',
'multiple',
'muted',
'nomodule',
'novalidate',
'open',
'playsinline',
'readonly',
'required',
'reversed',
'selected',
];
const childrenToStringToBuffer = (children, buffer) => {
for (let i = 0, len = children.length; i < len; i++) {
const child = children[i];
if (typeof child === 'string') {
(0, html_1.escapeToBuffer)(child, buffer);
}
else if (typeof child === 'boolean' || child === null || child === undefined) {
continue;
}
else if (child instanceof JSXNode) {
child.toStringToBuffer(buffer);
}
else if (typeof child === 'number' || child.isEscaped) {
buffer[0] += child;
}
else {
// `child` type is `Child[]`, so stringify recursively
childrenToStringToBuffer(child, buffer);
}
}
};
class JSXNode {
constructor(tag, props, children) {
this.isEscaped = true;
this.tag = tag;
this.props = props;
this.children = children;
}
toString() {
const buffer = [''];
this.toStringToBuffer(buffer);
return buffer[0];
}
toStringToBuffer(buffer) {
const tag = this.tag;
const props = this.props;
let { children } = this;
buffer[0] += `<${tag}`;
const propsKeys = Object.keys(props || {});
for (let i = 0, len = propsKeys.length; i < len; i++) {
const v = props[propsKeys[i]];
if (typeof v === 'string') {
buffer[0] += ` ${propsKeys[i]}="`;
(0, html_1.escapeToBuffer)(v, buffer);
buffer[0] += '"';
}
else if (typeof v === 'number') {
buffer[0] += ` ${propsKeys[i]}="${v}"`;
}
else if (v === null || v === undefined) {
// Do nothing
}
else if (typeof v === 'boolean' && booleanAttributes.includes(propsKeys[i])) {
if (v) {
buffer[0] += ` ${propsKeys[i]}=""`;
}
}
else if (propsKeys[i] === 'dangerouslySetInnerHTML') {
if (children.length > 0) {
throw 'Can only set one of `children` or `props.dangerouslySetInnerHTML`.';
}
const escapedString = new String(v.__html);
escapedString.isEscaped = true;
children = [escapedString];
}
else {
buffer[0] += ` ${propsKeys[i]}="`;
(0, html_1.escapeToBuffer)(v.toString(), buffer);
buffer[0] += '"';
}
}
if (emptyTags.includes(tag)) {
buffer[0] += '/>';
return;
}
buffer[0] += '>';
childrenToStringToBuffer(children, buffer);
buffer[0] += `</${tag}>`;
}
}
exports.JSXNode = JSXNode;
class JSXFunctionNode extends JSXNode {
toStringToBuffer(buffer) {
const { children } = this;
const res = this.tag.call(null, {
...this.props,
children: children.length <= 1 ? children[0] : children,
});
if (res instanceof JSXNode) {
res.toStringToBuffer(buffer);
}
else if (typeof res === 'number' || res.isEscaped) {
buffer[0] += res;
}
else {
(0, html_1.escapeToBuffer)(res, buffer);
}
}
}
class JSXFragmentNode extends JSXNode {
toStringToBuffer(buffer) {
childrenToStringToBuffer(this.children, buffer);
}
}
const jsxFn = (tag, props, ...children) => {
if (typeof tag === 'function') {
return new JSXFunctionNode(tag, props, children);
}
else {
return new JSXNode(tag, props, children);
}
};
exports.jsx = jsxFn;
const shallowEqual = (a, b) => {
if (a === b) {
return true;
}
const aKeys = Object.keys(a);
const bKeys = Object.keys(b);
if (aKeys.length !== bKeys.length) {
return false;
}
for (let i = 0, len = aKeys.length; i < len; i++) {
if (a[aKeys[i]] !== b[aKeys[i]]) {
return false;
}
}
return true;
};
const memo = (component, propsAreEqual = shallowEqual) => {
let computed = undefined;
let prevProps = undefined;
return ((props) => {
if (prevProps && !propsAreEqual(prevProps, props)) {
computed = undefined;
}
prevProps = props;
return (computed || (computed = component(props)));
});
};
exports.memo = memo;
const Fragment = (props) => {
return new JSXFragmentNode('', {}, props.children || []);
};
exports.Fragment = Fragment;
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