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 | 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 11x 11x 2x 2x 11x 11x 2x 2x 2x 2x 1x 2x 2x 24x 22x 24x 22x 22x 20x 20x 20x 2x 2x 9x 5x 5x 4x 4x 1x 1x 1x 1x 1x 1x 1x 2x 2x 2x 2x 2x 2x 1x 1x 1x 1x 1x 1x 2x 2x 22x 2x 2x 2x 2x 2x 14x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 1x 2x 2x 3x 1x 1x 2x 2x 2x 617x 30x 30x 30x 30x 30x 587x 2x 2x 2x 2x 2x 2x 2x 9x 2x 2x 7x 2x 2x 99x 2x 2x 97x 2x 2x 5x 5x 5x 5x 5x 1x 1x 4x 4x 4x 2x 2x 2x 2x 2x 2x 2x 2x 112x 112x | /** @import { Context, Visitors } from 'zimmerframe' */
/** @import { FunctionExpression, FunctionDeclaration } from 'estree' */
import { walk } from 'zimmerframe';
import * as b from '../../utils/builders.js';
import * as e from '../../errors.js';
/**
* @param {FunctionExpression | FunctionDeclaration} node
* @param {Context<any, any>} context
*/
function remove_this_param(node, context) {
if (node.params[0]?.type === 'Identifier' && node.params[0].name === 'this') {
node.params.shift();
}
return context.next();
}
/** @type {Visitors<any, null>} */
const visitors = {
Decorator(node) {
e.typescript_invalid_feature(node, 'decorators (related TSC proposal is not stage 4 yet)');
},
ImportDeclaration(node) {
if (node.importKind === 'type') return b.empty;
if (node.specifiers?.length > 0) {
const specifiers = node.specifiers.filter((/** @type {any} */ s) => s.importKind !== 'type');
if (specifiers.length === 0) return b.empty;
return { ...node, specifiers };
}
return node;
},
ExportNamedDeclaration(node, context) {
if (node.exportKind === 'type') return b.empty;
if (node.declaration) {
return context.next();
}
if (node.specifiers) {
const specifiers = node.specifiers.filter((/** @type {any} */ s) => s.exportKind !== 'type');
if (specifiers.length === 0) return b.empty;
return { ...node, specifiers };
}
return node;
},
ExportDefaultDeclaration(node) {
if (node.exportKind === 'type') return b.empty;
return node;
},
ExportAllDeclaration(node) {
if (node.exportKind === 'type') return b.empty;
return node;
},
PropertyDefinition(node) {
if (node.accessor) {
e.typescript_invalid_feature(
node,
'accessor fields (related TSC proposal is not stage 4 yet)'
);
}
},
TSAsExpression(node, context) {
return context.visit(node.expression);
},
TSSatisfiesExpression(node, context) {
return context.visit(node.expression);
},
TSNonNullExpression(node, context) {
return context.visit(node.expression);
},
TSInterfaceDeclaration() {
return b.empty;
},
TSTypeAliasDeclaration() {
return b.empty;
},
TSTypeParameterDeclaration() {
return b.empty;
},
TSTypeParameterInstantiation() {
return b.empty;
},
TSEnumDeclaration(node) {
e.typescript_invalid_feature(node, 'enums');
},
TSParameterProperty(node, context) {
if (node.accessibility && context.path.at(-2)?.kind === 'constructor') {
e.typescript_invalid_feature(node, 'accessibility modifiers on constructor parameters');
}
return node.parameter;
},
Identifier(node) {
if (node.typeAnnotation) {
return {
...node,
typeAnnotation: null
};
}
return node;
},
FunctionExpression: remove_this_param,
FunctionDeclaration: remove_this_param,
TSDeclareFunction() {
return b.empty;
},
ClassDeclaration(node, context) {
if (node.declare) {
return b.empty;
}
return context.next();
},
VariableDeclaration(node, context) {
if (node.declare) {
return b.empty;
}
return context.next();
},
TSModuleDeclaration(node, context) {
if (!node.body) return b.empty;
// namespaces can contain non-type nodes
const cleaned = /** @type {any[]} */ (node.body.body).map((entry) => context.visit(entry));
if (cleaned.some((entry) => entry !== b.empty)) {
e.typescript_invalid_feature(node, 'namespaces with non-type nodes');
}
return b.empty;
}
};
/**
* @template T
* @param {T} ast
* @returns {T}
*/
export function remove_typescript_nodes(ast) {
return walk(ast, null, visitors);
}
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