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Make our h handle void tags properly

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This commit is contained in:
Matthew Phillips 2021-03-15 15:41:15 -04:00
parent c14af18bef
commit aff6390cc7
1 changed files with 8 additions and 0 deletions
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8
src/frontend/h.ts
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@ -3,6 +3,9 @@ export type HChild = string | undefined | (() => string);
export type HMXComponent = (props: HProps, ...children: Array<HChild>) => string; export type HMXComponent = (props: HProps, ...children: Array<HChild>) => string;
export type HTag = string | HMXComponent; export type HTag = string | HMXComponent;
const voidTags = new Set(['area', 'base', 'br', 'col', 'command', 'embed', 'hr',
'img', 'input', 'keygen', 'link', 'meta', 'param', 'source', 'track', 'wbr']);
function* _h(tag: string, attrs: HProps, children: Array<HChild>) { function* _h(tag: string, attrs: HProps, children: Array<HChild>) {
yield `<${tag}`; yield `<${tag}`;
if (attrs) { if (attrs) {
@ -13,6 +16,11 @@ function* _h(tag: string, attrs: HProps, children: Array<HChild>) {
} }
yield '>'; yield '>';
// Void tags have no children.
if(voidTags.has(tag)) {
return;
}
for (let child of children) { for (let child of children) {
// Special: If a child is a function, call it automatically. // Special: If a child is a function, call it automatically.
// This lets you do {() => ...} without the extra boilerplate // This lets you do {() => ...} without the extra boilerplate