@typescript-eslint/eslint-plugin/dist/util/isAssignee.js

TypeScript plugin for ESLint

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.isAssignee = isAssignee;
const utils_1 = require("@typescript-eslint/utils");
function isAssignee(node) {
    const parent = node.parent;
    if (!parent) {
        return false;
    }
    // a[i] = 1, a[i] += 1, etc.
    if (parent.type === utils_1.AST_NODE_TYPES.AssignmentExpression &&
        parent.left === node) {
        return true;
    }
    // delete a[i]
    if (parent.type === utils_1.AST_NODE_TYPES.UnaryExpression &&
        parent.operator === 'delete' &&
        parent.argument === node) {
        return true;
    }
    // a[i]++, --a[i], etc.
    if (parent.type === utils_1.AST_NODE_TYPES.UpdateExpression &&
        parent.argument === node) {
        return true;
    }
    // [a[i]] = [0]
    if (parent.type === utils_1.AST_NODE_TYPES.ArrayPattern) {
        return true;
    }
    // [...a[i]] = [0]
    if (parent.type === utils_1.AST_NODE_TYPES.RestElement) {
        return true;
    }
    // ({ foo: a[i] }) = { foo: 0 }
    if (parent.type === utils_1.AST_NODE_TYPES.Property &&
        parent.value === node &&
        parent.parent.type === utils_1.AST_NODE_TYPES.ObjectExpression &&
        isAssignee(parent.parent)) {
        return true;
    }
    return false;
}
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