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Convert src/runtime/internal/ssr.ts to JavaScript

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pull/8569/head
S. Elliott Johnson 3 years ago
parent 05f3939ccc
commit 80eadfe8c8
1 changed files with 158 additions and 183 deletions
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341
src/runtime/internal/ssr.ts
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@ -2,222 +2,197 @@ import { set_current_component, current_component } from './lifecycle';
import { run_all, blank_object } from './utils';
import { boolean_attributes } from '../../shared/boolean_attributes';
export { is_void } from '../../shared/utils/names';
export const invalid_attribute_name_character =
/[\s'">/=\u{FDD0}-\u{FDEF}\u{FFFE}\u{FFFF}\u{1FFFE}\u{1FFFF}\u{2FFFE}\u{2FFFF}\u{3FFFE}\u{3FFFF}\u{4FFFE}\u{4FFFF}\u{5FFFE}\u{5FFFF}\u{6FFFE}\u{6FFFF}\u{7FFFE}\u{7FFFF}\u{8FFFE}\u{8FFFF}\u{9FFFE}\u{9FFFF}\u{AFFFE}\u{AFFFF}\u{BFFFE}\u{BFFFF}\u{CFFFE}\u{CFFFF}\u{DFFFE}\u{DFFFF}\u{EFFFE}\u{EFFFF}\u{FFFFE}\u{FFFFF}\u{10FFFE}\u{10FFFF}]/u;
export const invalid_attribute_name_character = /[\s'">/=\u{FDD0}-\u{FDEF}\u{FFFE}\u{FFFF}\u{1FFFE}\u{1FFFF}\u{2FFFE}\u{2FFFF}\u{3FFFE}\u{3FFFF}\u{4FFFE}\u{4FFFF}\u{5FFFE}\u{5FFFF}\u{6FFFE}\u{6FFFF}\u{7FFFE}\u{7FFFF}\u{8FFFE}\u{8FFFF}\u{9FFFE}\u{9FFFF}\u{AFFFE}\u{AFFFF}\u{BFFFE}\u{BFFFF}\u{CFFFE}\u{CFFFF}\u{DFFFE}\u{DFFFF}\u{EFFFE}\u{EFFFF}\u{FFFFE}\u{FFFFF}\u{10FFFE}\u{10FFFF}]/u;
// https://html.spec.whatwg.org/multipage/syntax.html#attributes-2
// https://infra.spec.whatwg.org/#noncharacter
/** @returns {string} */
export function spread(args, attrs_to_add) {
const attributes = Object.assign({}, ...args);
if (attrs_to_add) {
const classes_to_add = attrs_to_add.classes;
const styles_to_add = attrs_to_add.styles;
if (classes_to_add) {
if (attributes.class == null) {
attributes.class = classes_to_add;
} else {
attributes.class += ' ' + classes_to_add;
}
}
if (styles_to_add) {
if (attributes.style == null) {
attributes.style = style_object_to_string(styles_to_add);
} else {
attributes.style = style_object_to_string(
merge_ssr_styles(attributes.style, styles_to_add)
);
}
}
}
let str = '';
Object.keys(attributes).forEach((name) => {
if (invalid_attribute_name_character.test(name)) return;
const value = attributes[name];
if (value === true) str += ' ' + name;
else if (boolean_attributes.has(name.toLowerCase())) {
if (value) str += ' ' + name;
} else if (value != null) {
str += ` ${name}="${value}"`;
}
});
return str;
const attributes = Object.assign({}, ...args);
if (attrs_to_add) {
const classes_to_add = attrs_to_add.classes;
const styles_to_add = attrs_to_add.styles;
if (classes_to_add) {
if (attributes.class == null) {
attributes.class = classes_to_add;
}
else {
attributes.class += ' ' + classes_to_add;
}
}
if (styles_to_add) {
if (attributes.style == null) {
attributes.style = style_object_to_string(styles_to_add);
}
else {
attributes.style = style_object_to_string(merge_ssr_styles(attributes.style, styles_to_add));
}
}
}
let str = '';
Object.keys(attributes).forEach((name) => {
if (invalid_attribute_name_character.test(name))
return;
const value = attributes[name];
if (value === true)
str += ' ' + name;
else if (boolean_attributes.has(name.toLowerCase())) {
if (value)
str += ' ' + name;
}
else if (value != null) {
str += ` ${name}="${value}"`;
}
});
return str;
}
/** @returns {{}} */
export function merge_ssr_styles(style_attribute, style_directive) {
const style_object = {};
for (const individual_style of style_attribute.split(';')) {
const colon_index = individual_style.indexOf(':');
const name = individual_style.slice(0, colon_index).trim();
const value = individual_style.slice(colon_index + 1).trim();
if (!name) continue;
style_object[name] = value;
}
for (const name in style_directive) {
const value = style_directive[name];
if (value) {
style_object[name] = value;
} else {
delete style_object[name];
}
}
return style_object;
const style_object = {};
for (const individual_style of style_attribute.split(';')) {
const colon_index = individual_style.indexOf(':');
const name = individual_style.slice(0, colon_index).trim();
const value = individual_style.slice(colon_index + 1).trim();
if (!name)
continue;
style_object[name] = value;
}
for (const name in style_directive) {
const value = style_directive[name];
if (value) {
style_object[name] = value;
}
else {
delete style_object[name];
}
}
return style_object;
}
const ATTR_REGEX = /[&"]/g;
const CONTENT_REGEX = /[&<]/g;
/**
* Note: this method is performance sensitive and has been optimized
* https://github.com/sveltejs/svelte/pull/5701
* @param {unknown} value
* @returns {string}
*/
export function escape(value: unknown, is_attr = false) {
const str = String(value);
const pattern = is_attr ? ATTR_REGEX : CONTENT_REGEX;
pattern.lastIndex = 0;
let escaped = '';
let last = 0;
while (pattern.test(str)) {
const i = pattern.lastIndex - 1;
const ch = str[i];
escaped += str.substring(last, i) + (ch === '&' ? '&amp;' : ch === '"' ? '&quot;' : '&lt;');
last = i + 1;
}
return escaped + str.substring(last);
export function escape(value, is_attr = false) {
const str = String(value);
const pattern = is_attr ? ATTR_REGEX : CONTENT_REGEX;
pattern.lastIndex = 0;
let escaped = '';
let last = 0;
while (pattern.test(str)) {
const i = pattern.lastIndex - 1;
const ch = str[i];
escaped += str.substring(last, i) + (ch === '&' ? '&amp;' : ch === '"' ? '&quot;' : '&lt;');
last = i + 1;
}
return escaped + str.substring(last);
}
/** @returns {any} */
export function escape_attribute_value(value) {
// keep booleans, null, and undefined for the sake of `spread`
const should_escape = typeof value === 'string' || (value && typeof value === 'object');
return should_escape ? escape(value, true) : value;
// keep booleans, null, and undefined for the sake of `spread`
const should_escape = typeof value === 'string' || (value && typeof value === 'object');
return should_escape ? escape(value, true) : value;
}
/** @returns {{}} */
export function escape_object(obj) {
const result = {};
for (const key in obj) {
result[key] = escape_attribute_value(obj[key]);
}
return result;
const result = {};
for (const key in obj) {
result[key] = escape_attribute_value(obj[key]);
}
return result;
}
/** @returns {string} */
export function each(items, fn) {
let str = '';
for (let i = 0; i < items.length; i += 1) {
str += fn(items[i], i);
}
return str;
let str = '';
for (let i = 0; i < items.length; i += 1) {
str += fn(items[i], i);
}
return str;
}
export const missing_component = {
$$render: () => ''
$$render: () => ''
};
/** @returns {any} */
export function validate_component(component, name) {
if (!component || !component.$$render) {
if (name === 'svelte:component') name += ' this={...}';
throw new Error(
`<${name}> is not a valid SSR component. You may need to review your build config to ensure that dependencies are compiled, rather than imported as pre-compiled modules. Otherwise you may need to fix a <${name}>.`
);
}
return component;
if (!component || !component.$$render) {
if (name === 'svelte:component')
name += ' this={...}';
throw new Error(`<${name}> is not a valid SSR component. You may need to review your build config to ensure that dependencies are compiled, rather than imported as pre-compiled modules. Otherwise you may need to fix a <${name}>.`);
}
return component;
}
/** @returns {string} */
export function debug(file, line, column, values) {
console.log(`{@debug} ${file ? file + ' ' : ''}(${line}:${column})`); // eslint-disable-line no-console
console.log(values); // eslint-disable-line no-console
return '';
console.log(`{@debug} ${file ? file + ' ' : ''}(${line}:${column})`); // eslint-disable-line no-console
console.log(values); // eslint-disable-line no-console
return '';
}
let on_destroy;
/** @returns {{ render: (props?: {}, { $$slots, context }?: { $$slots?: {}; context?: Map<any, any>; }) => { html: any; css: { code: string; map: any; }; head: string; }; $$render: (result: any, props: any, bindings: any, slots: any, context: any) => any; }} */
export function create_ssr_component(fn) {
function $$render(result, props, bindings, slots, context) {
const parent_component = current_component;
const $$ = {
on_destroy,
context: new Map(context || (parent_component ? parent_component.$$.context : [])),
// these will be immediately discarded
on_mount: [],
before_update: [],
after_update: [],
callbacks: blank_object()
};
set_current_component({ $$ });
const html = fn(result, props, bindings, slots);
set_current_component(parent_component);
return html;
}
return {
render: (props = {}, { $$slots = {}, context = new Map() } = {}) => {
on_destroy = [];
const result: {
title: string;
head: string;
css: Set<{
map: null;
code: string;
}>;
} = { title: '', head: '', css: new Set() };
const html = $$render(result, props, {}, $$slots, context);
run_all(on_destroy);
return {
html,
css: {
code: Array.from(result.css)
.map((css) => css.code)
.join('\n'),
map: null // TODO
},
head: result.title + result.head
};
},
$$render
};
/** @returns {any} */
function $$render(result, props, bindings, slots, context) {
const parent_component = current_component;
const $$ = {
on_destroy,
context: new Map(context || (parent_component ? parent_component.$$.context : [])),
// these will be immediately discarded
on_mount: [],
before_update: [],
after_update: [],
callbacks: blank_object()
};
set_current_component({ $$ });
const html = fn(result, props, bindings, slots);
set_current_component(parent_component);
return html;
}
return {
render: (props = {}, { $$slots = {}, context = new Map() } = {}) => {
on_destroy = [];
const result = { title: '', head: '', css: new Set() };
const html = $$render(result, props, {}, $$slots, context);
run_all(on_destroy);
return {
html,
css: {
code: Array.from(result.css)
.map((css) => css.code)
.join('\n'),
map: null // TODO
},
head: result.title + result.head
};
},
$$render
};
}
/** @returns {string} */
export function add_attribute(name, value, boolean) {
if (value == null || (boolean && !value)) return '';
const assignment = boolean && value === true ? '' : `="${escape(value, true)}"`;
return ` ${name}${assignment}`;
if (value == null || (boolean && !value))
return '';
const assignment = boolean && value === true ? '' : `="${escape(value, true)}"`;
return ` ${name}${assignment}`;
}
/** @returns {string} */
export function add_classes(classes) {
return classes ? ` class="${classes}"` : '';
return classes ? ` class="${classes}"` : '';
}
/** @returns {string} */
function style_object_to_string(style_object) {
return Object.keys(style_object)
.filter((key) => style_object[key])
.map((key) => `${key}: ${escape_attribute_value(style_object[key])};`)
.join(' ');
return Object.keys(style_object)
.filter((key) => style_object[key])
.map((key) => `${key}: ${escape_attribute_value(style_object[key])};`)
.join(' ');
}
/** @returns {string} */
export function add_styles(style_object) {
const styles = style_object_to_string(style_object);
return styles ? ` style="${styles}"` : '';
const styles = style_object_to_string(style_object);
return styles ? ` style="${styles}"` : '';
}

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