@tldraw/editor
Version:
A tiny little drawing app (editor).
83 lines (82 loc) • 2.1 kB
JavaScript
;
var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __export = (target, all) => {
for (var name in all)
__defProp(target, name, { get: all[name], enumerable: true });
};
var __copyProps = (to, from, except, desc) => {
if (from && typeof from === "object" || typeof from === "function") {
for (let key of __getOwnPropNames(from))
if (!__hasOwnProp.call(to, key) && key !== except)
__defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
}
return to;
};
var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);
var Stack_exports = {};
__export(Stack_exports, {
stack: () => stack
});
module.exports = __toCommonJS(Stack_exports);
var import_state = require("@tldraw/state");
function stack(items) {
if (items) {
let result = EMPTY_STACK_ITEM;
while (items.length) {
result = result.push(items.pop());
}
return result;
}
return EMPTY_STACK_ITEM;
}
class EmptyStackItem {
length = 0;
head = null;
tail = this;
push(head) {
return new StackItem(head, this);
}
toArray() {
return import_state.EMPTY_ARRAY;
}
[Symbol.iterator]() {
return {
next() {
return { value: void 0, done: true };
}
};
}
}
const EMPTY_STACK_ITEM = new EmptyStackItem();
class StackItem {
constructor(head, tail) {
this.head = head;
this.tail = tail;
this.length = tail.length + 1;
}
length;
push(head) {
return new StackItem(head, this);
}
toArray() {
return Array.from(this);
}
[Symbol.iterator]() {
let stack2 = this;
return {
next() {
if (stack2.length) {
const value = stack2.head;
stack2 = stack2.tail;
return { value, done: false };
} else {
return { value: void 0, done: true };
}
}
};
}
}
//# sourceMappingURL=Stack.js.map