Press n or j to go to the next uncovered block, b, p or k for the previous block.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 | 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 3565x 3565x 3565x 3565x 967x 968x 968x 968x 276x 276x 276x 692x 967x 140x 140x 140x 140x 15x 15x 15x 140x 140x 67x 67x 34x 67x 30x 30x 30x 30x 30x 67x 140x 140x 15x 15x 15x 15x 15x 15x 15x 15x 140x 2x 2x 2x 2x 2x 2x 2x 2x 140x 140x 140x 140x 140x 552x 552x 552x 968x 968x 968x 12x 12x 12x 12x 12x 540x 941x 532x 532x 532x 8x 924x 6x 6x 6x 6x 6x 2x 2x 2x 3565x 2598x 2938x 2938x 2938x 2938x 2938x 529x 529x 529x 2409x 2938x 2056x 5x 5x 5x 5x 5x 5x 5x 5x 5x 5x 5x 31x 31x 31x 31x 31x 31x 5x 5x 2051x 2051x 2051x 2051x 2056x 2056x 2056x 2056x 2056x 2056x 2056x 990x 990x 990x 2051x 2051x 2051x 2051x 2051x 353x 353x 353x 353x 353x 2938x 2938x 2938x 2938x 2598x 3565x 3565x 3565x 3565x 3565x 3565x 2x 2x 2x 2x 2x 2x 2x 355x 355x 351x 351x 4x 4x 4x 4x 4x 4x 10x 10x 4x 4x 4x | /** @import { VariableDeclaration, VariableDeclarator, Expression, CallExpression, Pattern, Identifier } from 'estree' */ /** @import { Binding } from '#compiler' */ /** @import { Context } from '../types.js' */ /** @import { Scope } from '../../../scope.js' */ import { build_fallback, extract_paths } from '../../../../utils/ast.js'; import * as b from '../../../../utils/builders.js'; import { get_rune } from '../../../scope.js'; import { walk } from 'zimmerframe'; /** * @param {VariableDeclaration} node * @param {Context} context */ export function VariableDeclaration(node, context) { /** @type {VariableDeclarator[]} */ const declarations = []; if (context.state.analysis.runes) { for (const declarator of node.declarations) { const init = declarator.init; const rune = get_rune(init, context.state.scope); if (!rune || rune === '$effect.tracking' || rune === '$inspect' || rune === '$effect.root') { declarations.push(/** @type {VariableDeclarator} */ (context.visit(declarator))); continue; } if (rune === '$props') { let has_rest = false; // remove $bindable() from props declaration let id = walk(declarator.id, null, { RestElement(node, context) { if (context.path.at(-1) === declarator.id) { has_rest = true; } }, AssignmentPattern(node) { if ( node.right.type === 'CallExpression' && get_rune(node.right, context.state.scope) === '$bindable' ) { const right = node.right.arguments.length ? /** @type {Expression} */ (context.visit(node.right.arguments[0])) : b.id('undefined'); return b.assignment_pattern(node.left, right); } } }); if (id.type === 'ObjectPattern' && has_rest) { // If a rest pattern is used within an object pattern, we need to ensure we don't expose $$slots or $$events id.properties.splice( id.properties.length - 1, 0, // @ts-ignore b.prop('init', b.id('$$slots'), b.id('$$slots')), b.prop('init', b.id('$$events'), b.id('$$events')) ); } else if (id.type === 'Identifier') { // If $props is referenced as an identifier, we need to ensure we don't expose $$slots or $$events as properties // on the identifier reference id = b.object_pattern([ b.prop('init', b.id('$$slots'), b.id('$$slots')), b.prop('init', b.id('$$events'), b.id('$$events')), b.rest(b.id(id.name)) ]); } declarations.push( b.declarator(/** @type {Pattern} */ (context.visit(id)), b.id('$$props')) ); continue; } const args = /** @type {CallExpression} */ (init).arguments; const value = args.length === 0 ? b.id('undefined') : /** @type {Expression} */ (context.visit(args[0])); if (rune === '$derived.by') { declarations.push( b.declarator(/** @type {Pattern} */ (context.visit(declarator.id)), b.call(value)) ); continue; } if (declarator.id.type === 'Identifier') { declarations.push(b.declarator(declarator.id, value)); continue; } if (rune === '$derived') { declarations.push( b.declarator(/** @type {Pattern} */ (context.visit(declarator.id)), value) ); continue; } declarations.push(...create_state_declarators(declarator, context.state.scope, value)); } } else { for (const declarator of node.declarations) { const bindings = /** @type {Binding[]} */ (context.state.scope.get_bindings(declarator)); const has_state = bindings.some((binding) => binding.kind === 'state'); const has_props = bindings.some((binding) => binding.kind === 'bindable_prop'); if (!has_state && !has_props) { declarations.push(/** @type {VariableDeclarator} */ (context.visit(declarator))); continue; } if (has_props) { if (declarator.id.type !== 'Identifier') { // Turn export let into props. It's really really weird because export let { x: foo, z: [bar]} = .. // means that foo and bar are the props (i.e. the leafs are the prop names), not x and z. const tmp = context.state.scope.generate('tmp'); const paths = extract_paths(declarator.id); declarations.push( b.declarator( b.id(tmp), /** @type {Expression} */ (context.visit(/** @type {Expression} */ (declarator.init))) ) ); for (const path of paths) { const value = path.expression?.(b.id(tmp)); const name = /** @type {Identifier} */ (path.node).name; const binding = /** @type {Binding} */ (context.state.scope.get(name)); const prop = b.member(b.id('$$props'), b.literal(binding.prop_alias ?? name), true); declarations.push(b.declarator(path.node, build_fallback(prop, value))); } continue; } const binding = /** @type {Binding} */ (context.state.scope.get(declarator.id.name)); const prop = b.member( b.id('$$props'), b.literal(binding.prop_alias ?? declarator.id.name), true ); /** @type {Expression} */ let init = prop; if (declarator.init) { const default_value = /** @type {Expression} */ (context.visit(declarator.init)); init = build_fallback(prop, default_value); } declarations.push(b.declarator(declarator.id, init)); continue; } declarations.push( ...create_state_declarators( declarator, context.state.scope, /** @type {Expression} */ (declarator.init && context.visit(declarator.init)) ) ); } } return { ...node, declarations }; } /** * @param {VariableDeclarator} declarator * @param {Scope} scope * @param {Expression} value * @returns {VariableDeclarator[]} */ function create_state_declarators(declarator, scope, value) { if (declarator.id.type === 'Identifier') { return [b.declarator(declarator.id, value)]; } const tmp = scope.generate('tmp'); const paths = extract_paths(declarator.id); return [ b.declarator(b.id(tmp), value), // TODO inject declarator for opts, so we can use it below ...paths.map((path) => { const value = path.expression?.(b.id(tmp)); return b.declarator(path.node, value); }) ]; } |