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import { should_proxy_or_freeze } from '../../3-transform/client/utils.js'; import * as e from '../../../errors.js'; import * as w from '../../../warnings.js'; import { is_rune } from '../../../../utils.js'; /** * @param {Identifier} node * @param {Context} context */ export function Identifier(node, context) { let i = context.path.length; let parent = /** @type {Expression} */ (context.path[--i]); if (!is_reference(node, parent)) { return; } // If we are using arguments outside of a function, then throw an error if ( node.name === 'arguments' && !context.path.some((n) => n.type === 'FunctionDeclaration' || n.type === 'FunctionExpression') ) { e.invalid_arguments_usage(node); } // `$$slots` exists even in runes mode if (node.name === '$$slots') { context.state.analysis.uses_slots = true; } if (context.state.analysis.runes) { if ( is_rune(node.name) && context.state.scope.get(node.name) === null && context.state.scope.get(node.name.slice(1)) === null ) { /** @type {Expression} */ let current = node; let name = node.name; while (parent.type === 'MemberExpression') { if (parent.computed) e.rune_invalid_computed_property(parent); name += `.${/** @type {Identifier} */ (parent.property).name}`; current = parent; parent = /** @type {Expression} */ (context.path[--i]); if (!is_rune(name)) { if (name === '$effect.active') { e.rune_renamed(parent, '$effect.active', '$effect.tracking'); } e.rune_invalid_name(parent, name); } } if (parent.type !== 'CallExpression') { e.rune_missing_parentheses(current); } } } let binding = context.state.scope.get(node.name); if (!context.state.analysis.runes) { if (node.name === '$$props') { context.state.analysis.uses_props = true; } if (node.name === '$$restProps') { context.state.analysis.uses_rest_props = true; } if ( binding?.kind === 'normal' && ((binding.scope === context.state.instance_scope && binding.declaration_kind !== 'function') || binding.declaration_kind === 'import') ) { if (binding.declaration_kind === 'import') { if ( binding.mutated && // TODO could be more fine-grained - not every mention in the template implies a state binding (context.state.reactive_statement || context.state.ast_type === 'template') && parent.type === 'MemberExpression' ) { binding.kind = 'legacy_reactive_import'; } } else if ( binding.mutated && // TODO could be more fine-grained - not every mention in the template implies a state binding (context.state.reactive_statement || context.state.ast_type === 'template') ) { binding.kind = 'state'; } else if ( context.state.reactive_statement && parent.type === 'AssignmentExpression' && parent.left === binding.node ) { binding.kind = 'derived'; } } else if (binding?.kind === 'each' && binding.mutated) { // Ensure that the array is marked as reactive even when only its entries are mutated let i = context.path.length; while (i--) { const ancestor = context.path[i]; if ( ancestor.type === 'EachBlock' && context.state.analysis.template.scopes.get(ancestor)?.declarations.get(node.name) === binding ) { for (const binding of ancestor.metadata.references) { if (binding.kind === 'normal') { binding.kind = 'state'; } } break; } } } } if (binding && binding.kind !== 'normal') { if (context.state.expression) { context.state.expression.dependencies.add(binding); context.state.expression.has_state = true; } if ( context.state.analysis.runes && node !== binding.node && context.state.function_depth === binding.scope.function_depth && // If we have $state that can be proxied or frozen and isn't re-assigned, then that means // it's likely not using a primitive value and thus this warning isn't that helpful. ((binding.kind === 'state' && (binding.reassigned || (binding.initial?.type === 'CallExpression' && binding.initial.arguments.length === 1 && binding.initial.arguments[0].type !== 'SpreadElement' && !should_proxy_or_freeze(binding.initial.arguments[0], context.state.scope)))) || binding.kind === 'frozen_state' || binding.kind === 'derived') && // We're only concerned with reads here (parent.type !== 'AssignmentExpression' || parent.left !== node) && parent.type !== 'UpdateExpression' ) { w.state_referenced_locally(node); } } } |