@aws-cdk/core
Version:
AWS Cloud Development Kit Core Library
128 lines • 12.9 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
const intrinsic_1 = require("./private/intrinsic");
const stack_1 = require("./stack");
/**
* Given an object, converts all keys to PascalCase given they are currently in camel case.
* @param obj The object.
*/
function capitalizePropertyNames(construct, obj) {
const stack = stack_1.Stack.of(construct);
obj = stack.resolve(obj);
if (typeof (obj) !== 'object') {
return obj;
}
if (Array.isArray(obj)) {
return obj.map(x => capitalizePropertyNames(construct, x));
}
const newObj = {};
for (const key of Object.keys(obj)) {
const value = obj[key];
const first = key.charAt(0).toUpperCase();
const newKey = first + key.slice(1);
newObj[newKey] = capitalizePropertyNames(construct, value);
}
return newObj;
}
exports.capitalizePropertyNames = capitalizePropertyNames;
/**
* Turns empty arrays/objects to undefined (after evaluating tokens).
*/
function ignoreEmpty(obj) {
return new PostResolveToken(obj, o => {
// undefined/null
if (o == null) {
return o;
}
if (Array.isArray(o) && o.length === 0) {
return undefined;
}
if (typeof (o) === 'object' && Object.keys(o).length === 0) {
return undefined;
}
return o;
});
}
exports.ignoreEmpty = ignoreEmpty;
/**
* Returns a copy of `obj` without `undefined` (or `null`) values in maps or arrays.
*/
function filterUndefined(obj) {
if (Array.isArray(obj)) {
return obj.filter(x => x != null).map(x => filterUndefined(x));
}
if (typeof (obj) === 'object') {
const ret = {};
for (const [key, value] of Object.entries(obj)) {
if (value == null) {
continue;
}
ret[key] = filterUndefined(value);
}
return ret;
}
return obj;
}
exports.filterUndefined = filterUndefined;
/**
* A Token that applies a function AFTER resolve resolution
*/
class PostResolveToken extends intrinsic_1.Intrinsic {
constructor(value, processor) {
super(value);
this.processor = processor;
}
resolve(context) {
context.registerPostProcessor(this);
return super.resolve(context);
}
postProcess(o, _context) {
return this.processor(o);
}
}
exports.PostResolveToken = PostResolveToken;
/**
* @returns the list of stacks that lead from the top-level stack (non-nested) all the way to a nested stack.
*/
function pathToTopLevelStack(s) {
if (s.nestedStackParent) {
return [...pathToTopLevelStack(s.nestedStackParent), s];
}
else {
return [s];
}
}
exports.pathToTopLevelStack = pathToTopLevelStack;
/**
* @returns true if this stack is a direct or indirect parent of the nested
* stack `nested`. If `nested` is a top-level stack, returns false.
*/
function isParentOfNestedStack(parent, child) {
// if "nested" is not a nested stack, then by definition we cannot be its parent
if (!child.nestedStackParent) {
return false;
}
// if this is the direct parent, then we found it
if (parent === child.nestedStackParent) {
return true;
}
// traverse up
return isParentOfNestedStack(parent, child.nestedStackParent);
}
exports.isParentOfNestedStack = isParentOfNestedStack;
/**
* Given two arrays, returns the last common element or `undefined` if there
* isn't (arrays are foriegn).
*/
function findLastCommonElement(path1, path2) {
let i = 0;
while (i < path1.length && i < path2.length) {
if (path1[i] !== path2[i]) {
break;
}
i++;
}
return path1[i - 1];
}
exports.findLastCommonElement = findLastCommonElement;
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{ IConstruct } from \"./construct-compat\";\nimport { Intrinsic } from \"./private/intrinsic\";\nimport { IPostProcessor, IResolveContext } from \"./resolvable\";\nimport { Stack } from \"./stack\";\n\n/**\n * Given an object, converts all keys to PascalCase given they are currently in camel case.\n * @param obj The object.\n */\nexport function capitalizePropertyNames(construct: IConstruct, obj: any): any {\n  const stack = Stack.of(construct);\n  obj = stack.resolve(obj);\n\n  if (typeof(obj) !== 'object') {\n    return obj;\n  }\n\n  if (Array.isArray(obj)) {\n    return obj.map(x => capitalizePropertyNames(construct, x));\n  }\n\n  const newObj: any = { };\n  for (const key of Object.keys(obj)) {\n    const value = obj[key];\n\n    const first = key.charAt(0).toUpperCase();\n    const newKey = first + key.slice(1);\n    newObj[newKey] = capitalizePropertyNames(construct, value);\n  }\n\n  return newObj;\n}\n\n/**\n * Turns empty arrays/objects to undefined (after evaluating tokens).\n */\nexport function ignoreEmpty(obj: any): any {\n return new PostResolveToken(obj, o => {\n    // undefined/null\n    if (o == null) {\n      return o;\n    }\n\n    if (Array.isArray(o) && o.length === 0) {\n      return undefined;\n    }\n\n    if (typeof(o) === 'object' && Object.keys(o).length === 0) {\n      return undefined;\n    }\n\n    return o;\n  });\n}\n\n/**\n * Returns a copy of `obj` without `undefined` (or `null`) values in maps or arrays.\n */\nexport function filterUndefined(obj: any): any {\n  if (Array.isArray(obj)) {\n    return obj.filter(x => x != null).map(x => filterUndefined(x));\n  }\n\n  if (typeof(obj) === 'object') {\n    const ret: any = { };\n    for (const [key, value] of Object.entries(obj)) {\n      if (value == null) {\n        continue;\n      }\n      ret[key] = filterUndefined(value);\n    }\n    return ret;\n  }\n\n  return obj;\n}\n\n/**\n * A Token that applies a function AFTER resolve resolution\n */\nexport class PostResolveToken extends Intrinsic implements IPostProcessor {\n  constructor(value: any, private readonly processor: (x: any) => any) {\n    super(value);\n  }\n\n  public resolve(context: IResolveContext) {\n    context.registerPostProcessor(this);\n    return super.resolve(context);\n  }\n\n  public postProcess(o: any, _context: IResolveContext): any {\n    return this.processor(o);\n  }\n}\n\n/**\n * @returns the list of stacks that lead from the top-level stack (non-nested) all the way to a nested stack.\n */\nexport function pathToTopLevelStack(s: Stack): Stack[] {\n  if (s.nestedStackParent) {\n    return [ ...pathToTopLevelStack(s.nestedStackParent), s ];\n  } else {\n    return [ s ];\n  }\n}\n\n/**\n * @returns true if this stack is a direct or indirect parent of the nested\n * stack `nested`. If `nested` is a top-level stack, returns false.\n */\nexport function isParentOfNestedStack(parent: Stack, child: Stack): boolean {\n  // if \"nested\" is not a nested stack, then by definition we cannot be its parent\n  if (!child.nestedStackParent) {\n    return false;\n  }\n\n  // if this is the direct parent, then we found it\n  if (parent === child.nestedStackParent) {\n    return true;\n  }\n\n  // traverse up\n  return isParentOfNestedStack(parent, child.nestedStackParent);\n}\n\n/**\n * Given two arrays, returns the last common element or `undefined` if there\n * isn't (arrays are foriegn).\n */\nexport function findLastCommonElement<T>(path1: T[], path2: T[]): T | undefined {\n  let i = 0;\n  while (i < path1.length && i < path2.length) {\n    if (path1[i] !== path2[i]) {\n      break;\n    }\n\n    i++;\n  }\n\n  return path1[i - 1];\n}"]}