50 lines
1.7 KiB
JavaScript
50 lines
1.7 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.isIdentifierRead = isIdentifierRead;
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exports.isVarLoop = isVarLoop;
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exports.isLoop = isLoop;
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function isIdentifierRead(node, parent) {
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switch (parent.type) {
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case 'ObjectPattern':
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case 'ArrayPattern':
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// Note: default values not currently supported
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return false;
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// disregard `bar` in `bar = thing()`
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case 'AssignmentExpression':
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return parent.right === node;
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case 'MemberExpression':
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return parent.computed || node === parent.object;
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// disregard the `bar` in `{ bar: foo }`
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case 'Property':
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return node === parent.value;
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// disregard the `bar` in `class Foo { bar () {...} }`
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case 'MethodDefinition':
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return false;
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// disregard the `bar` in var bar = asdf
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case 'VariableDeclarator':
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return parent.id !== node;
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// disregard the `bar` in `export { foo as bar }`
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case 'ExportSpecifier':
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return false;
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// disregard the `bar` in `function (bar) {}`
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case 'FunctionExpression':
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case 'FunctionDeclaration':
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case 'ArrowFunctionExpression':
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return false;
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default:
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return true;
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}
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}
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function isVarLoop(node) {
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return (node.type === 'ForStatement' ||
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node.type === 'ForInStatement' ||
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node.type === 'ForOfStatement');
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}
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function isLoop(node) {
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return (node.type === 'ForStatement' ||
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node.type === 'ForInStatement' ||
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node.type === 'ForOfStatement' ||
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node.type === 'WhileStatement' ||
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node.type === 'DoWhileStatement');
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}
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