serverless-spy
Version:
CDK-based library for writing elegant integration tests on AWS serverless architecture and an additional web console to monitor events in real time.
93 lines (92 loc) • 3.09 kB
JavaScript
export function map(arg0, arg1, arg2) {
let target;
let filter;
let instructions;
if (typeof arg1 === "undefined" && typeof arg2 === "undefined") {
target = {};
instructions = arg0;
}
else {
target = arg0;
if (typeof arg1 === "function") {
filter = arg1;
instructions = arg2;
return mapWithFilter(target, filter, instructions);
}
else {
instructions = arg1;
}
}
for (const key of Object.keys(instructions)) {
if (!Array.isArray(instructions[key])) {
target[key] = instructions[key];
continue;
}
applyInstruction(target, null, instructions, key);
}
return target;
}
export const convertMap = (target) => {
const output = {};
for (const [k, v] of Object.entries(target || {})) {
output[k] = [, v];
}
return output;
};
export const take = (source, instructions) => {
const out = {};
for (const key in instructions) {
applyInstruction(out, source, instructions, key);
}
return out;
};
const mapWithFilter = (target, filter, instructions) => {
return map(target, Object.entries(instructions).reduce((_instructions, [key, value]) => {
if (Array.isArray(value)) {
_instructions[key] = value;
}
else {
if (typeof value === "function") {
_instructions[key] = [filter, value()];
}
else {
_instructions[key] = [filter, value];
}
}
return _instructions;
}, {}));
};
const applyInstruction = (target, source, instructions, targetKey) => {
if (source !== null) {
let instruction = instructions[targetKey];
if (typeof instruction === "function") {
instruction = [, instruction];
}
const [filter = nonNullish, valueFn = pass, sourceKey = targetKey] = instruction;
if ((typeof filter === "function" && filter(source[sourceKey])) || (typeof filter !== "function" && !!filter)) {
target[targetKey] = valueFn(source[sourceKey]);
}
return;
}
let [filter, value] = instructions[targetKey];
if (typeof value === "function") {
let _value;
const defaultFilterPassed = filter === undefined && (_value = value()) != null;
const customFilterPassed = (typeof filter === "function" && !!filter(void 0)) || (typeof filter !== "function" && !!filter);
if (defaultFilterPassed) {
target[targetKey] = _value;
}
else if (customFilterPassed) {
target[targetKey] = value();
}
}
else {
const defaultFilterPassed = filter === undefined && value != null;
const customFilterPassed = (typeof filter === "function" && !!filter(value)) || (typeof filter !== "function" && !!filter);
if (defaultFilterPassed || customFilterPassed) {
target[targetKey] = value;
}
}
};
const nonNullish = (_) => _ != null;
const pass = (_) => _;