tslint-immutable/rules/noMixedInterfaceRule.js

TSLint rules to disable mutation in TypeScript.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var utils = require("tsutils/typeguard/2.8");
var check_node_1 = require("./shared/check-node");
// tslint:disable-next-line:variable-name
exports.Rule = check_node_1.createCheckNodeRule(checkNode, "Only the same kind of members allowed in interfaces.");
function checkNode(node, _ctx) {
    var invalidNodes = [];
    if (utils.isInterfaceDeclaration(node)) {
        var prevMemberKind = undefined;
        var prevMemberType = undefined;
        for (var _i = 0, _a = node.members; _i < _a.length; _i++) {
            var member = _a[_i];
            var memberKind = member.kind;
            var memberType = 0;
            // If it is a property declaration we need to check the type too
            if (utils.isPropertySignature(member) &&
                member.type &&
                utils.isFunctionTypeNode(member.type)) {
                // We only set memberType for Functions
                memberType = member.type.kind;
            }
            if (prevMemberKind !== undefined &&
                (prevMemberKind !== memberKind || prevMemberType !== memberType)) {
                invalidNodes.push(check_node_1.createInvalidNode(member, []));
            }
            prevMemberKind = memberKind;
            prevMemberType = memberType;
        }
    }
    return { invalidNodes: invalidNodes };
}
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