60 lines
3.4 KiB
JavaScript
60 lines
3.4 KiB
JavaScript
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function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); enumerableOnly && (symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; })), keys.push.apply(keys, symbols); } return keys; }
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function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = null != arguments[i] ? arguments[i] : {}; i % 2 ? ownKeys(Object(source), !0).forEach(function (key) { _defineProperty(target, key, source[key]); }) : Object.getOwnPropertyDescriptors ? Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)) : ownKeys(Object(source)).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } return target; }
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function _defineProperty(obj, key, value) { key = _toPropertyKey(key); if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
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function _toPropertyKey(arg) { var key = _toPrimitive(arg, "string"); return typeof key === "symbol" ? key : String(key); }
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function _toPrimitive(input, hint) { if (typeof input !== "object" || input === null) return input; var prim = input[Symbol.toPrimitive]; if (prim !== undefined) { var res = prim.call(input, hint || "default"); if (typeof res !== "object") return res; throw new TypeError("@@toPrimitive must return a primitive value."); } return (hint === "string" ? String : Number)(input); }
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export default createDedent({});
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function createDedent(options) {
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dedent.withOptions = newOptions => createDedent(_objectSpread(_objectSpread({}, options), newOptions));
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return dedent;
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function dedent(strings, ...values) {
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const raw = typeof strings === "string" ? [strings] : strings.raw;
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const {
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escapeSpecialCharacters = Array.isArray(strings)
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} = options;
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// first, perform interpolation
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let result = "";
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for (let i = 0; i < raw.length; i++) {
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let next = raw[i];
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if (escapeSpecialCharacters) {
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// handle escaped newlines, backticks, and interpolation characters
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next = next.replace(/\\\n[ \t]*/g, "").replace(/\\`/g, "`").replace(/\\\$/g, "$").replace(/\\{/g, "{");
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}
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result += next;
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if (i < values.length) {
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// eslint-disable-next-line @typescript-eslint/restrict-plus-operands
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result += values[i];
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}
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}
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// now strip indentation
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const lines = result.split("\n");
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let mindent = null;
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for (const l of lines) {
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const m = l.match(/^(\s+)\S+/);
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if (m) {
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const indent = m[1].length;
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if (!mindent) {
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// this is the first indented line
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mindent = indent;
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} else {
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mindent = Math.min(mindent, indent);
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}
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}
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}
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if (mindent !== null) {
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const m = mindent; // appease TypeScript
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result = lines
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// https://github.com/typescript-eslint/typescript-eslint/issues/7140
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// eslint-disable-next-line @typescript-eslint/prefer-string-starts-ends-with
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.map(l => l[0] === " " || l[0] === "\t" ? l.slice(m) : l).join("\n");
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}
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return result
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// dedent eats leading and trailing whitespace too
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.trim()
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// handle escaped newlines at the end to ensure they don't get stripped too
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.replace(/\\n/g, "\n");
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}
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}
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