| 1 |
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| 2 |
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| 3 | import { readFileSync } from 'fs';
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| 4 | import path from 'path';
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| 5 | import template from 'babel-template';
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| 6 | import astify from 'babel-literal-to-ast';
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| 7 | import meta from './meta';
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| 8 |
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| 9 | const render = template(readFileSync(
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| 10 | path.join(__dirname, '..', 'share', 'prelude.js'), 'utf8'
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| 11 | ));
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| 12 |
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| 13 | export default function prelude(state) {
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| 14 | const coverage = meta(state);
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| 15 | const name = state.file.opts.filenameRelative;
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| 16 | const global = (state.opts && state.opts.global) || '__coverage__';
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| 17 | return render({
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| 18 | GLOBAL: astify(global),
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| 19 | HASH: astify(coverage.hash),
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| 20 | TAGS: astify(coverage.tags),
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| 21 | VARIABLE: coverage.variable,
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| 22 | FILE: astify(name),
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| 23 | LOCATIONS: astify(coverage.entries),
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| 24 | COUNT: astify(coverage.entries.length),
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| 25 | });
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| 26 | }
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