node_modules/@angular/material/schematics/ng-update/migrations/hammer-gestures-v9/remove-array-element.js

"use strict";
/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
Object.defineProperty(exports, "__esModule", { value: true });
exports.removeElementFromArrayExpression = exports.getParentSyntaxList = void 0;
const ts = require("typescript");
/**
 * Retrieves the parent syntax list of the given node. A syntax list node is usually
 * hidden from the default AST node hierarchy because it only contains information that
 * is need when printing a node. e.g. it contains information about comma positions in
 * an array literal expression.
 */
function getParentSyntaxList(node) {
    if (!node.parent) {
        return null;
    }
    const parent = node.parent;
    const { pos, end } = node;
    for (const child of parent.getChildren()) {
        if (child.pos > end || child === node) {
            return null;
        }
        if (child.kind === ts.SyntaxKind.SyntaxList && child.pos <= pos && child.end >= end) {
            return child;
        }
    }
    return null;
}
exports.getParentSyntaxList = getParentSyntaxList;
/** Looks for the trailing comma of the given element within the syntax list. */
function findTrailingCommaToken(list, element) {
    let foundElement = false;
    for (let child of list.getChildren()) {
        if (!foundElement && child === element) {
            foundElement = true;
        }
        else if (foundElement) {
            if (child.kind === ts.SyntaxKind.CommaToken) {
                return child;
            }
            break;
        }
    }
    return null;
}
/** Removes a given element from its parent array literal expression. */
function removeElementFromArrayExpression(element, recorder) {
    recorder.remove(element.getFullStart(), element.getFullWidth());
    const syntaxList = getParentSyntaxList(element);
    if (!syntaxList) {
        return;
    }
    // if there is a trailing comma token for the element, we need to remove it
    // because otherwise the array literal expression will have syntax failures.
    const trailingComma = findTrailingCommaToken(syntaxList, element);
    if (trailingComma !== null) {
        recorder.remove(trailingComma.getFullStart(), trailingComma.getFullWidth());
    }
}
exports.removeElementFromArrayExpression = removeElementFromArrayExpression;
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xpc3QsIGVsZW1lbnQpO1xuICBpZiAodHJhaWxpbmdDb21tYSAhPT0gbnVsbCkge1xuICAgIHJlY29yZGVyLnJlbW92ZSh0cmFpbGluZ0NvbW1hLmdldEZ1bGxTdGFydCgpLCB0cmFpbGluZ0NvbW1hLmdldEZ1bGxXaWR0aCgpKTtcbiAgfVxufVxuIl19