49 lines
1.7 KiB
JavaScript
Executable File
49 lines
1.7 KiB
JavaScript
Executable File
import { has } from "./util";
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// A second optional argument can be given to further configure
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// the parser process. These options are recognized:
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export const defaultOptions = {
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// Source type ("script" or "module") for different semantics
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sourceType: "script",
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// By default, reserved words are not enforced. Disable
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// `allowReserved` to enforce them. When this option has the
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// value "never", reserved words and keywords can also not be
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// used as property names.
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allowReserved: true,
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// When enabled, a return at the top level is not considered an
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// error.
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allowReturnOutsideFunction: false,
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// When enabled, import/export statements are not constrained to
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// appearing at the top of the program.
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allowImportExportEverywhere: false,
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// When `locations` is on, `loc` properties holding objects with
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// `start` and `end` properties in `{line, column}` form (with
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// line being 1-based and column 0-based) will be attached to the
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// nodes.
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locations: false,
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// Nodes have their start and end characters offsets recorded in
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// `start` and `end` properties (directly on the node, rather than
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// the `loc` object, which holds line/column data. To also add a
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// [semi-standardized][range] `range` property holding a `[start,
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// end]` array with the same numbers, set the `ranges` option to
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// `true`.
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//
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// [range]: https://bugzilla.mozilla.org/show_bug.cgi?id=745678
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ranges: false,
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plugins: {},
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// Babel-specific options
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features: {},
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strictMode: null
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};
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// Interpret and default an options object
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export function getOptions(opts) {
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let options = {};
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for (let opt in defaultOptions) {
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options[opt] = opts && has(opts, opt) ? opts[opt] : defaultOptions[opt];
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}
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return options;
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}
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