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- const typeChecker = (type) => {
- const typeString = "[object " + type + "]";
- return function (value) {
- return getClassName(value) === typeString;
- };
- };
- const getClassName = value => Object.prototype.toString.call(value);
- const comparable = (value) => {
- if (value instanceof Date) {
- return value.getTime();
- }
- else if (isArray(value)) {
- return value.map(comparable);
- }
- else if (value && typeof value.toJSON === "function") {
- return value.toJSON();
- }
- return value;
- };
- const isArray = typeChecker("Array");
- const isObject = typeChecker("Object");
- const isFunction = typeChecker("Function");
- const isVanillaObject = value => {
- return (value &&
- (value.constructor === Object ||
- value.constructor === Array ||
- value.constructor.toString() === "function Object() { [native code] }" ||
- value.constructor.toString() === "function Array() { [native code] }") &&
- !value.toJSON);
- };
- const equals = (a, b) => {
- if (a == null && a == b) {
- return true;
- }
- if (a === b) {
- return true;
- }
- if (Object.prototype.toString.call(a) !== Object.prototype.toString.call(b)) {
- return false;
- }
- if (isArray(a)) {
- if (a.length !== b.length) {
- return false;
- }
- for (let i = 0, { length } = a; i < length; i++) {
- if (!equals(a[i], b[i]))
- return false;
- }
- return true;
- }
- else if (isObject(a)) {
- if (Object.keys(a).length !== Object.keys(b).length) {
- return false;
- }
- for (const key in a) {
- if (!equals(a[key], b[key]))
- return false;
- }
- return true;
- }
- return false;
- };
- /**
- * Walks through each value given the context - used for nested operations. E.g:
- * { "person.address": { $eq: "blarg" }}
- */
- const walkKeyPathValues = (item, keyPath, next, depth, key, owner) => {
- const currentKey = keyPath[depth];
- // if array, then try matching. Might fall through for cases like:
- // { $eq: [1, 2, 3] }, [ 1, 2, 3 ].
- if (isArray(item) && isNaN(Number(currentKey))) {
- for (let i = 0, { length } = item; i < length; i++) {
- // if FALSE is returned, then terminate walker. For operations, this simply
- // means that the search critera was met.
- if (!walkKeyPathValues(item[i], keyPath, next, depth, i, item)) {
- return false;
- }
- }
- }
- if (depth === keyPath.length || item == null) {
- return next(item, key, owner);
- }
- return walkKeyPathValues(item[currentKey], keyPath, next, depth + 1, currentKey, item);
- };
- class BaseOperation {
- constructor(params, owneryQuery, options) {
- this.params = params;
- this.owneryQuery = owneryQuery;
- this.options = options;
- this.init();
- }
- init() { }
- reset() {
- this.done = false;
- this.keep = false;
- }
- }
- class NamedBaseOperation extends BaseOperation {
- constructor(params, owneryQuery, options, name) {
- super(params, owneryQuery, options);
- this.name = name;
- }
- }
- class GroupOperation extends BaseOperation {
- constructor(params, owneryQuery, options, children) {
- super(params, owneryQuery, options);
- this.children = children;
- }
- /**
- */
- reset() {
- this.keep = false;
- this.done = false;
- for (let i = 0, { length } = this.children; i < length; i++) {
- this.children[i].reset();
- }
- }
- /**
- */
- childrenNext(item, key, owner) {
- let done = true;
- let keep = true;
- for (let i = 0, { length } = this.children; i < length; i++) {
- const childOperation = this.children[i];
- childOperation.next(item, key, owner);
- if (!childOperation.keep) {
- keep = false;
- }
- if (childOperation.done) {
- if (!childOperation.keep) {
- break;
- }
- }
- else {
- done = false;
- }
- }
- this.done = done;
- this.keep = keep;
- }
- }
- class NamedGroupOperation extends GroupOperation {
- constructor(params, owneryQuery, options, children, name) {
- super(params, owneryQuery, options, children);
- this.name = name;
- }
- }
- class QueryOperation extends GroupOperation {
- /**
- */
- next(item, key, parent) {
- this.childrenNext(item, key, parent);
- }
- }
- class NestedOperation extends GroupOperation {
- constructor(keyPath, params, owneryQuery, options, children) {
- super(params, owneryQuery, options, children);
- this.keyPath = keyPath;
- /**
- */
- this._nextNestedValue = (value, key, owner) => {
- this.childrenNext(value, key, owner);
- return !this.done;
- };
- }
- /**
- */
- next(item, key, parent) {
- walkKeyPathValues(item, this.keyPath, this._nextNestedValue, 0, key, parent);
- }
- }
- const createTester = (a, compare) => {
- if (a instanceof Function) {
- return a;
- }
- if (a instanceof RegExp) {
- return b => {
- const result = typeof b === "string" && a.test(b);
- a.lastIndex = 0;
- return result;
- };
- }
- const comparableA = comparable(a);
- return b => compare(comparableA, comparable(b));
- };
- class EqualsOperation extends BaseOperation {
- init() {
- this._test = createTester(this.params, this.options.compare);
- }
- next(item, key, parent) {
- if (!Array.isArray(parent) || parent.hasOwnProperty(key)) {
- if (this._test(item, key, parent)) {
- this.done = true;
- this.keep = true;
- }
- }
- }
- }
- const createEqualsOperation = (params, owneryQuery, options) => new EqualsOperation(params, owneryQuery, options);
- class NopeOperation extends BaseOperation {
- next() {
- this.done = true;
- this.keep = false;
- }
- }
- const numericalOperationCreator = (createNumericalOperation) => (params, owneryQuery, options, name) => {
- if (params == null) {
- return new NopeOperation(params, owneryQuery, options);
- }
- return createNumericalOperation(params, owneryQuery, options, name);
- };
- const numericalOperation = (createTester) => numericalOperationCreator((params, owneryQuery, options) => {
- const typeofParams = typeof comparable(params);
- const test = createTester(params);
- return new EqualsOperation(b => {
- return typeof comparable(b) === typeofParams && test(b);
- }, owneryQuery, options);
- });
- const createNamedOperation = (name, params, parentQuery, options) => {
- const operationCreator = options.operations[name];
- if (!operationCreator) {
- throw new Error(`Unsupported operation: ${name}`);
- }
- return operationCreator(params, parentQuery, options, name);
- };
- const containsOperation = (query) => {
- for (const key in query) {
- if (key.charAt(0) === "$")
- return true;
- }
- return false;
- };
- const createNestedOperation = (keyPath, nestedQuery, owneryQuery, options) => {
- if (containsOperation(nestedQuery)) {
- const [selfOperations, nestedOperations] = createQueryOperations(nestedQuery, options);
- if (nestedOperations.length) {
- throw new Error(`Property queries must contain only operations, or exact objects.`);
- }
- return new NestedOperation(keyPath, nestedQuery, owneryQuery, options, selfOperations);
- }
- return new NestedOperation(keyPath, nestedQuery, owneryQuery, options, [
- new EqualsOperation(nestedQuery, owneryQuery, options)
- ]);
- };
- const createQueryOperation = (query, owneryQuery = null, { compare, operations } = {}) => {
- const options = {
- compare: compare || equals,
- operations: Object.assign({}, operations || {})
- };
- const [selfOperations, nestedOperations] = createQueryOperations(query, options);
- const ops = [];
- if (selfOperations.length) {
- ops.push(new NestedOperation([], query, owneryQuery, options, selfOperations));
- }
- ops.push(...nestedOperations);
- if (ops.length === 1) {
- return ops[0];
- }
- return new QueryOperation(query, owneryQuery, options, ops);
- };
- const createQueryOperations = (query, options) => {
- const selfOperations = [];
- const nestedOperations = [];
- if (!isVanillaObject(query)) {
- selfOperations.push(new EqualsOperation(query, query, options));
- return [selfOperations, nestedOperations];
- }
- for (const key in query) {
- if (key.charAt(0) === "$") {
- const op = createNamedOperation(key, query[key], query, options);
- // probably just a flag for another operation (like $options)
- if (op != null) {
- selfOperations.push(op);
- }
- }
- else {
- nestedOperations.push(createNestedOperation(key.split("."), query[key], query, options));
- }
- }
- return [selfOperations, nestedOperations];
- };
- const createOperationTester = (operation) => (item, key, owner) => {
- operation.reset();
- operation.next(item, key, owner);
- return operation.keep;
- };
- const createQueryTester = (query, options = {}) => {
- return createOperationTester(createQueryOperation(query, null, options));
- };
- class $Ne extends NamedBaseOperation {
- init() {
- this._test = createTester(this.params, this.options.compare);
- }
- reset() {
- super.reset();
- this.keep = true;
- }
- next(item) {
- if (this._test(item)) {
- this.done = true;
- this.keep = false;
- }
- }
- }
- // https://docs.mongodb.com/manual/reference/operator/query/elemMatch/
- class $ElemMatch extends NamedBaseOperation {
- init() {
- this._queryOperation = createQueryOperation(this.params, this.owneryQuery, this.options);
- }
- reset() {
- super.reset();
- this._queryOperation.reset();
- }
- next(item) {
- if (isArray(item)) {
- for (let i = 0, { length } = item; i < length; i++) {
- // reset query operation since item being tested needs to pass _all_ query
- // operations for it to be a success
- this._queryOperation.reset();
- // check item
- this._queryOperation.next(item[i], i, item);
- this.keep = this.keep || this._queryOperation.keep;
- }
- this.done = true;
- }
- else {
- this.done = false;
- this.keep = false;
- }
- }
- }
- class $Not extends NamedBaseOperation {
- init() {
- this._queryOperation = createQueryOperation(this.params, this.owneryQuery, this.options);
- }
- reset() {
- this._queryOperation.reset();
- }
- next(item, key, owner) {
- this._queryOperation.next(item, key, owner);
- this.done = this._queryOperation.done;
- this.keep = !this._queryOperation.keep;
- }
- }
- class $Size extends NamedBaseOperation {
- init() { }
- next(item) {
- if (isArray(item) && item.length === this.params) {
- this.done = true;
- this.keep = true;
- }
- // if (parent && parent.length === this.params) {
- // this.done = true;
- // this.keep = true;
- // }
- }
- }
- class $Or extends NamedBaseOperation {
- init() {
- this._ops = this.params.map(op => createQueryOperation(op, null, this.options));
- }
- reset() {
- this.done = false;
- this.keep = false;
- for (let i = 0, { length } = this._ops; i < length; i++) {
- this._ops[i].reset();
- }
- }
- next(item, key, owner) {
- let done = false;
- let success = false;
- for (let i = 0, { length } = this._ops; i < length; i++) {
- const op = this._ops[i];
- op.next(item, key, owner);
- if (op.keep) {
- done = true;
- success = op.keep;
- break;
- }
- }
- this.keep = success;
- this.done = done;
- }
- }
- class $Nor extends $Or {
- next(item, key, owner) {
- super.next(item, key, owner);
- this.keep = !this.keep;
- }
- }
- class $In extends NamedBaseOperation {
- init() {
- this._testers = this.params.map(value => {
- if (containsOperation(value)) {
- throw new Error(`cannot nest $ under ${this.constructor.name.toLowerCase()}`);
- }
- return createTester(value, this.options.compare);
- });
- }
- next(item, key, owner) {
- let done = false;
- let success = false;
- for (let i = 0, { length } = this._testers; i < length; i++) {
- const test = this._testers[i];
- if (test(item)) {
- done = true;
- success = true;
- break;
- }
- }
- this.keep = success;
- this.done = done;
- }
- }
- class $Nin extends $In {
- next(item, key, owner) {
- super.next(item, key, owner);
- this.keep = !this.keep;
- }
- }
- class $Exists extends NamedBaseOperation {
- next(item, key, owner) {
- if (owner.hasOwnProperty(key) === this.params) {
- this.done = true;
- this.keep = true;
- }
- }
- }
- class $And extends NamedGroupOperation {
- constructor(params, owneryQuery, options, name) {
- super(params, owneryQuery, options, params.map(query => createQueryOperation(query, owneryQuery, options)), name);
- }
- next(item, key, owner) {
- this.childrenNext(item, key, owner);
- }
- }
- const $eq = (params, owneryQuery, options) => new EqualsOperation(params, owneryQuery, options);
- const $ne = (params, owneryQuery, options, name) => new $Ne(params, owneryQuery, options, name);
- const $or = (params, owneryQuery, options, name) => new $Or(params, owneryQuery, options, name);
- const $nor = (params, owneryQuery, options, name) => new $Nor(params, owneryQuery, options, name);
- const $elemMatch = (params, owneryQuery, options, name) => new $ElemMatch(params, owneryQuery, options, name);
- const $nin = (params, owneryQuery, options, name) => new $Nin(params, owneryQuery, options, name);
- const $in = (params, owneryQuery, options, name) => new $In(params, owneryQuery, options, name);
- const $lt = numericalOperation(params => b => b < params);
- const $lte = numericalOperation(params => b => b <= params);
- const $gt = numericalOperation(params => b => b > params);
- const $gte = numericalOperation(params => b => b >= params);
- const $mod = ([mod, equalsValue], owneryQuery, options) => new EqualsOperation(b => comparable(b) % mod === equalsValue, owneryQuery, options);
- const $exists = (params, owneryQuery, options, name) => new $Exists(params, owneryQuery, options, name);
- const $regex = (pattern, owneryQuery, options) => new EqualsOperation(new RegExp(pattern, owneryQuery.$options), owneryQuery, options);
- const $not = (params, owneryQuery, options, name) => new $Not(params, owneryQuery, options, name);
- const typeAliases = {
- number: v => typeof v === "number",
- string: v => typeof v === "string",
- bool: v => typeof v === "boolean",
- array: v => Array.isArray(v),
- null: v => v === null,
- timestamp: v => v instanceof Date
- };
- const $type = (clazz, owneryQuery, options) => new EqualsOperation(b => {
- if (typeof clazz === "string") {
- if (!typeAliases[clazz]) {
- throw new Error(`Type alias does not exist`);
- }
- return typeAliases[clazz](b);
- }
- return b != null ? b instanceof clazz || b.constructor === clazz : false;
- }, owneryQuery, options);
- const $and = (params, ownerQuery, options, name) => new $And(params, ownerQuery, options, name);
- const $all = $and;
- const $size = (params, ownerQuery, options) => new $Size(params, ownerQuery, options, "$size");
- const $options = () => null;
- const $where = (params, ownerQuery, options) => {
- let test;
- if (isFunction(params)) {
- test = params;
- }
- else if (!process.env.CSP_ENABLED) {
- test = new Function("obj", "return " + params);
- }
- else {
- throw new Error(`In CSP mode, sift does not support strings in "$where" condition`);
- }
- return new EqualsOperation(b => test.bind(b)(b), ownerQuery, options);
- };
- var defaultOperations = /*#__PURE__*/Object.freeze({
- __proto__: null,
- $Size: $Size,
- $eq: $eq,
- $ne: $ne,
- $or: $or,
- $nor: $nor,
- $elemMatch: $elemMatch,
- $nin: $nin,
- $in: $in,
- $lt: $lt,
- $lte: $lte,
- $gt: $gt,
- $gte: $gte,
- $mod: $mod,
- $exists: $exists,
- $regex: $regex,
- $not: $not,
- $type: $type,
- $and: $and,
- $all: $all,
- $size: $size,
- $options: $options,
- $where: $where
- });
- const createDefaultQueryOperation = (query, ownerQuery, { compare, operations } = {}) => {
- return createQueryOperation(query, ownerQuery, {
- compare: compare,
- operations: Object.assign({}, defaultOperations, operations || {})
- });
- };
- const createDefaultQueryTester = (query, options = {}) => {
- const op = createDefaultQueryOperation(query, null, options);
- return createOperationTester(op);
- };
- export default createDefaultQueryTester;
- export { $Size, $all, $and, $elemMatch, $eq, $exists, $gt, $gte, $in, $lt, $lte, $mod, $ne, $nin, $nor, $not, $options, $or, $regex, $size, $type, $where, EqualsOperation, createDefaultQueryOperation, createEqualsOperation, createOperationTester, createQueryOperation, createQueryTester };
- //# sourceMappingURL=index.js.map
|