random thing

// Name: The Stack
// ID: stack
// Description: Push, pull or peek values on any number of stacks!
// By: SforzandoCF <https://scratch.mit.edu/users/CzechFlagTDOC/>
// License: MPL-2.0 AND BSD-3-Clause
// Version: 1.0.0
let stacks = {};

const definitions = [
    {
        opcode: "push",
        blockType: BlockType.COMMAND,
        text: "push [VALUE] to [STACK]",
        arguments: {
            VALUE: {
                type: ArgumentType.STRING,
                defaultValue: ""
            },
            STACK: {
                type: ArgumentType.STRING,
                defaultValue: "my stack"
            }
        },
        def: function ({ VALUE, STACK }) {
            if (!Object.hasOwn(stacks, STACK)) stacks[STACK] = [];
            stacks[STACK].push(VALUE);
        }
    },
        {
            opcode: "popBlock",
            blockType: BlockType.COMMAND,
            text: "pop value from [STACK]",
            arguments: {
                STACK: {
                    type: ArgumentType.STRING,
                    defaultValue: "my stack"
                }
            },
            def: function ({ STACK }) {
                if (!Object.hasOwn(stacks, STACK)) stacks[STACK] = [];
                stacks[STACK].pop();
            }
        },
        {
            opcode: "popValue",
            blockType: BlockType.REPORTER,
            text: "pop value from [STACK]",
            arguments: {
                STACK: {
                    type: ArgumentType.STRING,
                    defaultValue: "my stack"
                }
            },
            def: function ({ STACK }) {
                if (!Object.hasOwn(stacks, STACK)) stacks[STACK] = [];
                return stacks[STACK].pop() ?? "";
            }
        },
        {
            opcode: "peekValue",
            blockType: BlockType.REPORTER,
            text: "peek top value from [STACK]",
            arguments: {
                STACK: {
                    type: ArgumentType.STRING,
                    defaultValue: "my stack"
                }
            },
            def: function ({ STACK }) {
                if (!Object.hasOwn(stacks, STACK)) stacks[STACK] = [];
                return stacks[STACK].peek() ?? "";
            }
        },
    {
        opcode: "sizeOf",
        blockType: BlockType.REPORTER,
        text: "size of [STACK]",
        arguments: {
            STACK: {
                type: ArgumentType.STRING,
                defaultValue: "my stack"
            }
        },
        def: function ({ STACK }) {
            if (!Object.hasOwn(stacks, STACK)) stacks[STACK] = [];
            return stacks[STACK].length;
        }
    },
    {
        opcode: "isEmpty",
        blockType: BlockType.BOOLEAN,
        text: "is [STACK] empty?",
        arguments: {
            STACK: {
                type: ArgumentType.STRING,
                defaultValue: "my stack"
            }
        },
        def: function ({ STACK }) {
            if (!Object.hasOwn(stacks, STACK)) stacks[STACK] = [];
            return stacks[STACK].length == 0;
        }
    }
];

Scratch.extensions.register({
    getInfo: function () {
        return {
            id: "stack",
            name: "Stack",
            color1: "#D65CB1",
            color2: "#D147A8",
            color3: "#B82E8E",
            blocks: definitions,
        };
    }
});