karlkoder-playground/src/playground_console.js

156 lines
4.5 KiB
JavaScript

export class PlaygroundConsole {
constructor(elem, editor) {
this.elem = elem;
// Used within error stack traces
globalThis.gotoLine = (line, col) => {
editor.gotoLine(line, col, true);
editor.focus();
};
}
formatStacktrace(stack) {
return stack
.replaceAll(globalThis.origin + "/", "")
.replace(
/data:text\/javascript;charset=utf-8,[^:]+:(\d+):(\d+)/g,
"<a href='javascript:gotoLine($1,$2)'>karlkoder-playground:$1:$2</a>",
);
}
getTypeName(arg) {
if (arg instanceof Error) {
return "error";
}
if (arg === null) {
return "null";
}
return typeof arg;
}
addKeyValue(_entryType, parent, property, arg) {
if (property) {
const keyEl = document.createElement("span");
keyEl.className = property === "__proto__" ? "prototype" : "property";
keyEl.textContent = property + ": ";
parent.appendChild(keyEl);
}
const argString = typeof arg === "function" ? `function ${arg.name}()` : `${arg}`;
const value = document.createElement("span");
value.textContent = argString;
value.dataset.type = this.getTypeName(arg);
parent.appendChild(value);
}
addEntry(entryType, property, parent, ...args) {
for (const arg of args) {
// For objects, show a collapsed list of properties
if (typeof arg === "object" && arg !== null) {
const summary = document.createElement("summary");
summary.className = entryType;
summary.dataset.type = "object";
summary.style.marginLeft = "-1rem";
this.addKeyValue(entryType, summary, property, arg);
const details = document.createElement("details");
details.className = entryType;
details.style.marginLeft = "1rem";
details.open = entryType === "dir"; // Expand if console.dir() is used
details.appendChild(summary);
if (arg instanceof Error) {
// Add error stack trace
const el = document.createElement("p");
el.innerHTML = this.formatStacktrace(arg.stack);
details.appendChild(el);
} else {
// Add object properties
for (const prop of Object.getOwnPropertyNames(arg)) {
this.addEntry(
entryType,
prop,
details,
arg.__lookupGetter__(prop) ?? arg[prop],
);
}
// Add prototype if one exists
const prototype = Object.getPrototypeOf(arg);
if (prototype && Object.getOwnPropertyNames(prototype).length > 0) {
this.addEntry(entryType, "__proto__", details, prototype);
}
}
parent.appendChild(details);
return;
}
// For non-object values, show it directly
const wrapper = document.createElement("p");
wrapper.className = entryType;
this.addKeyValue(entryType, wrapper, property, arg);
parent.appendChild(wrapper);
}
}
addTopLevelEntry(entryType, ...args) {
this.addEntry(entryType, "", this.elem, ...args);
this.elem.scrollTop = this.elem.scrollHeight;
}
addInput() {
this.addTopLevelEntry("input", ...arguments);
}
getInterface() {
return new PlaygroundConsoleInterface(this);
}
clear() {
this.elem.textContent = "";
}
}
class PlaygroundConsoleInterface {
#console;
constructor(console) {
this.#console = console;
}
log() {
this.#console.addTopLevelEntry("log", ...arguments);
}
dir() {
this.#console.addTopLevelEntry("dir", ...arguments);
}
debug() {
this.#console.addTopLevelEntry("debug", ...arguments);
}
info() {
this.#console.addTopLevelEntry("info", ...arguments);
}
warn() {
this.#console.addTopLevelEntry("warn", ...arguments);
}
error() {
this.#console.addTopLevelEntry("error", ...arguments);
}
clear() {
this.#console.clear();
}
}