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Diffstat (limited to 'node_modules/@babel/traverse/lib/path/inference/inferer-reference.js')
-rw-r--r--node_modules/@babel/traverse/lib/path/inference/inferer-reference.js151
1 files changed, 0 insertions, 151 deletions
diff --git a/node_modules/@babel/traverse/lib/path/inference/inferer-reference.js b/node_modules/@babel/traverse/lib/path/inference/inferer-reference.js
deleted file mode 100644
index b262faf0..00000000
--- a/node_modules/@babel/traverse/lib/path/inference/inferer-reference.js
+++ /dev/null
@@ -1,151 +0,0 @@
-"use strict";
-
-Object.defineProperty(exports, "__esModule", {
- value: true
-});
-exports.default = _default;
-var _t = require("@babel/types");
-var _util = require("./util.js");
-const {
- BOOLEAN_NUMBER_BINARY_OPERATORS,
- createTypeAnnotationBasedOnTypeof,
- numberTypeAnnotation,
- voidTypeAnnotation
-} = _t;
-function _default(node) {
- if (!this.isReferenced()) return;
- const binding = this.scope.getBinding(node.name);
- if (binding) {
- if (binding.identifier.typeAnnotation) {
- return binding.identifier.typeAnnotation;
- } else {
- return getTypeAnnotationBindingConstantViolations(binding, this, node.name);
- }
- }
- if (node.name === "undefined") {
- return voidTypeAnnotation();
- } else if (node.name === "NaN" || node.name === "Infinity") {
- return numberTypeAnnotation();
- } else if (node.name === "arguments") {}
-}
-function getTypeAnnotationBindingConstantViolations(binding, path, name) {
- const types = [];
- const functionConstantViolations = [];
- let constantViolations = getConstantViolationsBefore(binding, path, functionConstantViolations);
- const testType = getConditionalAnnotation(binding, path, name);
- if (testType) {
- const testConstantViolations = getConstantViolationsBefore(binding, testType.ifStatement);
- constantViolations = constantViolations.filter(path => !testConstantViolations.includes(path));
- types.push(testType.typeAnnotation);
- }
- if (constantViolations.length) {
- constantViolations.push(...functionConstantViolations);
- for (const violation of constantViolations) {
- types.push(violation.getTypeAnnotation());
- }
- }
- if (!types.length) {
- return;
- }
- return (0, _util.createUnionType)(types);
-}
-function getConstantViolationsBefore(binding, path, functions) {
- const violations = binding.constantViolations.slice();
- violations.unshift(binding.path);
- return violations.filter(violation => {
- violation = violation.resolve();
- const status = violation._guessExecutionStatusRelativeTo(path);
- if (functions && status === "unknown") functions.push(violation);
- return status === "before";
- });
-}
-function inferAnnotationFromBinaryExpression(name, path) {
- const operator = path.node.operator;
- const right = path.get("right").resolve();
- const left = path.get("left").resolve();
- let target;
- if (left.isIdentifier({
- name
- })) {
- target = right;
- } else if (right.isIdentifier({
- name
- })) {
- target = left;
- }
- if (target) {
- if (operator === "===") {
- return target.getTypeAnnotation();
- }
- if (BOOLEAN_NUMBER_BINARY_OPERATORS.includes(operator)) {
- return numberTypeAnnotation();
- }
- return;
- }
- if (operator !== "===" && operator !== "==") return;
- let typeofPath;
- let typePath;
- if (left.isUnaryExpression({
- operator: "typeof"
- })) {
- typeofPath = left;
- typePath = right;
- } else if (right.isUnaryExpression({
- operator: "typeof"
- })) {
- typeofPath = right;
- typePath = left;
- }
- if (!typeofPath) return;
- if (!typeofPath.get("argument").isIdentifier({
- name
- })) return;
- typePath = typePath.resolve();
- if (!typePath.isLiteral()) return;
- const typeValue = typePath.node.value;
- if (typeof typeValue !== "string") return;
- return createTypeAnnotationBasedOnTypeof(typeValue);
-}
-function getParentConditionalPath(binding, path, name) {
- let parentPath;
- while (parentPath = path.parentPath) {
- if (parentPath.isIfStatement() || parentPath.isConditionalExpression()) {
- if (path.key === "test") {
- return;
- }
- return parentPath;
- }
- if (parentPath.isFunction()) {
- if (parentPath.parentPath.scope.getBinding(name) !== binding) return;
- }
- path = parentPath;
- }
-}
-function getConditionalAnnotation(binding, path, name) {
- const ifStatement = getParentConditionalPath(binding, path, name);
- if (!ifStatement) return;
- const test = ifStatement.get("test");
- const paths = [test];
- const types = [];
- for (let i = 0; i < paths.length; i++) {
- const path = paths[i];
- if (path.isLogicalExpression()) {
- if (path.node.operator === "&&") {
- paths.push(path.get("left"));
- paths.push(path.get("right"));
- }
- } else if (path.isBinaryExpression()) {
- const type = inferAnnotationFromBinaryExpression(name, path);
- if (type) types.push(type);
- }
- }
- if (types.length) {
- return {
- typeAnnotation: (0, _util.createUnionType)(types),
- ifStatement
- };
- }
- return getConditionalAnnotation(binding, ifStatement, name);
-}
-
-//# sourceMappingURL=inferer-reference.js.map