Method render_dynamic_key

package/svelte/compiler.js:20533–20582

(block, parent_node, parent_nodes)

      this.fragment.render(this.block, parent_node, parent_nodes);
    }
    render_dynamic_key(block, parent_node, parent_nodes) {
      this.fragment.render(this.block, null, x`#nodes`);
      const has_transitions = !!(this.block.has_intro_method || this.block.has_outro_method);
      const dynamic = this.block.has_update_method;
      const previous_key = block.get_unique_name("previous_key");
      const snippet = this.node.expression.manipulate(block);
      block.add_variable(previous_key, snippet);
      const not_equal = this.renderer.component.component_options.immutable ? x`@not_equal` : x`@safe_not_equal`;
      const condition = x`${this.renderer.dirty(this.dependencies)} && ${not_equal}(${previous_key}, ${previous_key} = ${snippet})`;
      block.chunks.init.push(b`
			let ${this.var} = ${this.block.name}(#ctx);
		`);
      block.chunks.create.push(b`${this.var}.c();`);
      if (this.renderer.options.hydratable) {
        block.chunks.claim.push(b`${this.var}.l(${parent_nodes});`);
      }
      block.chunks.mount.push(b`${this.var}.m(${parent_node || "#target"}, ${parent_node ? "null" : "#anchor"});`);
      const anchor = this.get_or_create_anchor(block, parent_node, parent_nodes);
      const body = b`
			${has_transitions ? b`
						@group_outros();
						@transition_out(${this.var}, 1, 1, @noop);
						@check_outros();
					` : b`${this.var}.d(1);`}
			${this.var} = ${this.block.name}(#ctx);
			${this.var}.c();
			${has_transitions && b`@transition_in(${this.var})`}
			${this.var}.m(${this.get_update_mount_node(anchor)}, ${anchor});
		`;
      if (dynamic) {
        block.chunks.update.push(b`
				if (${condition}) {
					${body}
				} else {
					${this.var}.p(#ctx, #dirty);
				}
			`);
      } else {
        block.chunks.update.push(b`
				if (${condition}) {
					${body}
				}
			`);
      }
      if (has_transitions) {
        block.chunks.intro.push(b`@transition_in(${this.var})`);
        block.chunks.outro.push(b`@transition_out(${this.var})`);
      }
      block.chunks.destroy.push(b`${this.var}.d(detaching)`);
    }
  };
  function get_slot_definition(block, scope2, lets) {
    if (lets.length === 0)